A packed tower is to be used to remove acetone from an air stream with pure water. The inlet acetone-rich gas stream has a concentration of 3.25 mole% acetone. The inlet gas flow rate is 1,003 lb mole/hr. The design acetone recovery is 97.5%. The equilibrium relationship based on acetone mole fractions is y= 1.7x. The minimum water flow rate (lb mole/hr) for the specified separation is most nearly:

Answers

Answer 1

To remove acetone from an air stream using a packed tower with pure water, the minimum water flow rate required for the specified separation is approximately 2,819 lb mole/hr.

In order to determine the minimum water flow rate for the acetone removal, we need to consider the design acetone recovery, inlet gas flow rate, and the equilibrium relationship between acetone mole fractions.

The design acetone recovery is given as 97.5%, which means that we aim to remove 97.5% of the acetone from the gas stream. The inlet gas flow rate is stated as 1,003 lb mole/hr.

The equilibrium relationship between acetone mole fractions is given as y = 1.7x, where y represents the mole fraction of acetone in the gas phase and x represents the mole fraction of acetone in the liquid phase.

To calculate the minimum water flow rate, we need to find the point where the liquid and gas phase concentrations reach equilibrium. At this point, the acetone mole fraction in the gas phase (y) will be equal to the acetone mole fraction in the liquid phase (x).

Given the equilibrium relationship, we can set y = 1.7x. Since the design acetone recovery is 97.5%, the mole fraction of acetone remaining in the gas phase after separation will be (100 - 97.5) / 100 = 0.025.

Substituting this value into the equation y = 1.7x, we can solve for x, which represents the mole fraction of acetone in the liquid phase at equilibrium. Solving the equation gives x = 0.0147.

The minimum water flow rate can now be calculated by multiplying the inlet gas flow rate by the mole fraction of acetone in the gas phase that remains after separation: 1,003 lb mole/hr * 0.025 = 25.08 lb mole/hr.

Therefore, the minimum water flow rate required for the specified separation is most nearly 2,819 lb mole/hr.

To learn more about acetone click here, brainly.com/question/31838988

#SPJ11


Related Questions

3 Ag(s) + 4 HNO3(aq) → 3 AgNO3(aq) + 2 H₂O(1) + NO(g)

A. How many moles of silver are needed to react with 40 moles of nitric acid?​

Answers

30 moles of silver are needed to react with 40 moles of nitric acid.

To determine the number of moles of silver needed to react with 40 moles of nitric acid, we need to analyze the balanced chemical equation and the stoichiometry of the reaction.

The balanced chemical equation is:

3 Ag(s) + 4 HNO3(aq) → 3 AgNO3(aq) + 2 H2O(1) + NO(g)

From the equation, we can see that the mole ratio between Ag and HNO3 is 3:4. This means that for every 3 moles of Ag, we need 4 moles of HNO3 to react completely.

Since we have 40 moles of HNO3, we can set up a proportion to find the number of moles of Ag needed:

(3 moles Ag / 4 moles HNO3) = (x moles Ag / 40 moles HNO3)

Cross-multiplying, we get:

4x = 3 * 40

4x = 120

Dividing both sides by 4, we find:

x = 30

Therefore, 30 moles of silver are needed to react with 40 moles of nitric acid.

For more questions on nitric acid, click on:

https://brainly.com/question/22698468

#SPJ8

Define the conversion of the limiting reactant (A) in a batch reactor. Same in a flow reactor. An elementary reaction A-Product occurs in a batch reactor. Write the kinetic equation (ra) for this reaction.

Answers

It refers to the extent of its consumption during the reaction, while in a flow reactor, it is determined by the residence time. The kinetic equation (ra) for the elementary reaction A-Product in a batch reactor is given by ra = k * [A].

In contrast, a flow reactor operates with a continuous flow of reactants and products. As reactants flow through the reactor, they encounter the necessary conditions for the reaction to occur, such as suitable temperature, pressure, and catalysts. The conversion of the limiting reactant A in a flow reactor is determined by the residence time, which is the average time a reactant spends inside the reactor. The longer the residence time, the higher the conversion of reactant A. The flow rate of reactants and the reactor size can also affect the conversion.

The kinetic equation (ra) for the elementary reaction A-Product in a batch reactor can be expressed using the rate law. The rate law describes the relationship between the rate of the reaction and the concentrations of the reactants. For the elementary reaction A-Product, the rate law can be written as:

ra = k * [A]

In this equation, ra represents the rate of the reaction, k is the rate constant that depends on the temperature and the specific reaction, and [A] represents the concentration of reactant A. The rate constant k and the concentration of reactant A determine the rate of the reaction, which can be measured experimentally. This equation shows that the rate of the reaction is directly proportional to the concentration of reactant A.

To learn more about catalysts click here, brainly.com/question/24430084

#SPJ11

What volume of ammonia would be produced by this reaction if 6. 4 cm3 of nitrogen were consumed

Answers

Therefore, 12.8 cm3 of ammonia would be produced by the reaction when 6.4 cm3 of nitrogen is consumed.

To determine the volume of ammonia produced, we need to consider the balanced chemical equation and the stoichiometry of the reaction. Since the chemical equation is not provided, I'll assume a balanced equation for the reaction of nitrogen (N2) with hydrogen (H2) to form ammonia (NH3):

N2(g) + 3H2(g) → 2NH3(g)

According to the balanced equation, 1 mole of nitrogen reacts with 3 moles of hydrogen to produce 2 moles of ammonia. From the given information, we know that 6.4 cm3 of nitrogen (N2) is consumed.

To calculate the volume of ammonia produced, we need to use the stoichiometric ratio between nitrogen and ammonia. From the balanced equation, we can see that the ratio is 1:2. Therefore, for every 1 cm3 of nitrogen consumed, 2 cm3 of ammonia will be produced.

Using this ratio, we can calculate the volume of ammonia produced as follows:

Volume of ammonia = (Volume of nitrogen consumed) × (2 cm3 of ammonia / 1 cm3 of nitrogen)

Volume of ammonia = 6.4 cm3 × 2 cm3/cm3

Volume of ammonia = 12.8 cm3

Therefore, 12.8 cm3 of ammonia would be produced by the reaction when 6.4 cm3 of nitrogen is consumed.

Learn more about reaction

https://brainly.com/question/16737295

#SPJ11

Is it possible to prepare 2-bromopentane in high yield by halogenation of an alkane? How many monohalo isomers are possible upon radical halogenation of the parent alkane? (Consider stereoisomers as well.)

Answers

Yes, it is possible to prepare 2-bromopentane in high yield by halogenation of an alkane. In the presence of UV light or heat, free-radical halogenation of alkanes happens.

The reaction proceeds in three phases: chain initiation, chain propagation, and chain termination. The propagation phase generates several mono-haloalkanes as intermediates in the formation of polyhalogenated compounds that may have more than one halogen atom.

For example, suppose pentane (C5H12) is subjected to radical halogenation with bromine (Br2).

In that case, 2-bromopentane (C5H11Br) is produced as one of several potential products, depending on the reaction conditions (temperature, halogen concentration, and so on).It is predicted that radical halogenation of an alkane would produce a mixture of mono-haloalkanes. In the case of pentane, for example, it is possible to form 8 different monohalo isomers. In the case of 2-bromopentane, only one stereoisomer is possible. As a result, the maximum possible yield of 2-bromopentane is roughly 12.5% (1/8th of the total possible products).

To know more about bromopentane visit:

https://brainly.com/question/31942070

#SPJ11

Calculate the mass of octane (C8H18(1)) that is burned to produce 2.000 metric tonnes (2000-kg) of carbon dioxide

Answers

Therefore, the mass of octane required to produce 2,000 kg of carbon dioxide is 649.56 g.

Given: Mass of carbon dioxide produced = 2,000 kg

Octane has a molecular formula C8H18

For the given question we will first have to calculate the amount of moles of carbon dioxide produced.

This can be done by using the balanced chemical equation of the combustion of octane which is:

C8H18 + 12.5 O2 → 8 CO2 + 9 H2O

From the balanced equation, we can see that 1 mol of octane produces 8 mol of carbon dioxide.

So, the number of moles of carbon dioxide produced will be given by:

number of moles of CO2 = 2,000/44= 45.45 mol

Now we can use stoichiometry to calculate the amount of octane required to produce this amount of carbon dioxide. We can use the balanced equation to relate the moles of octane and carbon dioxide.

1 mol of octane produces 8 mol of carbon dioxide

So, 45.45 mol of carbon dioxide will be produced by:

number of moles of octane = 45.45/8= 5.68 mol

Now, we can use the molar mass of octane to calculate the mass of octane required.

The molar mass of octane is given by:

Molar mass of octane = (8 x 12.01) + (18 x 1.01)

= 114.24 g/mol

So, the mass of octane required will be given by:

mass of octane = 5.68 x 114.24

= 649.56 g

The mass of octane required to produce 2,000 kg of carbon dioxide is 649.56 g.

To know more about octane visit:

https://brainly.com/question/26240306

#SPJ11

Q-3: A valve with a Cy rating of 4.0 is used to throttle the flow of glycerin (sg-1.26). Determine the maximum flow through the valve for a pressure drop of 100 psi? Answer: 35.6 gpm 7. 15. 0.4. A con

Answers

Answer: The maximum flow through the valve for a pressure drop of 100 psi is 35.6 gpm.

Given data:

Cy rating of valve = 4.0

Density of glycerin = sg = 1.26

Pressure drop = 100 psi

The formula for finding maximum flow through the valve is:

Q = Cy * √(ΔP/sg) * GPM

where, Q = maximum flow through the valve

Cy = Valve capacity coefficient

ΔP = Pressure drop in psi

SG = Specific gravity of fluid (density of fluid/density of water)

GPM = gallons per minute

Putting the values in the above formula we get

Q = 4.0 * √(100/1.26) * GPMQ = 4.0 * 6.96 * GPMQ = 27.84 * GPM

Multiplying both sides by 1/0.784 we get,

GPM = 35.6

Know more about flow here:

https://brainly.com/question/12945383

#SPJ11

25. Write the names of viscosity-providing clays that can be used instead of bentonite in salt muds with very high salt concentrations
26. Write the equivalent NaCl concentration value of sea water in ppm. Make a list of the elements that are present as cations or anions in sea water besides Na and Cl.
28. Write 3 of the Disadvantages of Oil-Based Drilling Fluid without any explanation.

Answers

25: Sepiolite and attapulgite. 26. Approximately 35,000 ppm. And elements are Mg, Ca, K, SO4, HCO3, CO3, and more.28.Environmental concerns, cost implications, potential formation damage.

25. In salt muds with very high salt concentrations, bentonite may not be suitable as a viscosity-providing clay due to its limited performance. However, alternative clays such as sepiolite and attapulgite can be used to provide viscosity in these conditions. Sepiolite and attapulgite are natural clays with unique properties that make them effective in high-salt environments.

The equivalent NaCl concentration of seawater is approximately 35,000 parts per million (ppm). This means that for every million parts of seawater, about 35,000 parts are composed of dissolved NaCl. The salinity of seawater can vary slightly depending on factors like location and temperature, but 35,000 ppm is a commonly used value.

Besides sodium (Na) and chloride (Cl), seawater contains various other cations and anions. Some of the common cations present in seawater include magnesium (Mg), calcium (Ca), and potassium (K). Similarly, sulfate (SO4), bicarbonate (HCO3), and carbonate (CO3) are among the many anions found in seawater. These elements contribute to the overall composition and chemical balance of seawater.

Three disadvantages of oil-based drilling fluids are:

Environmental Concerns: Oil-based drilling fluids have the potential to cause environmental damage if not handled properly. Spills or discharges of oil-based fluids can harm aquatic life, contaminate water sources, and have long-lasting ecological impacts.

Cost Implications: Oil-based drilling fluids tend to be more expensive compared to water-based alternatives. The cost of acquiring and disposing of oil-based fluids, as well as the need for specialized equipment and treatment methods, can significantly increase drilling expenses.

Potential Formation Damage: Oil-based drilling fluids may have a higher risk of causing formation damage compared to other types of drilling fluids. If not properly managed, the oil-based fluids can block pore spaces in the reservoir rock, reducing permeability and potentially impacting well productivity.

These disadvantages highlight the need for careful consideration and proper management when using oil-based drilling fluids in order to mitigate potential drawbacks and ensure safe and efficient drilling operations.

To learn more about NaCl click here, brainly.com/question/32275922

#SPJ11

A polluted air stream is saturated with benzene vapor initially at 44.7°C and 1.01 atm. To reduce the benzene vapor content of the stream, it is cooled to 13.8°C at constant pressure to condense some of the benzene. What percent of the original benzene was condensed by isobaric cooling? Type your answer in %, 2 decimal places. Antoine equation and constants for benzene: log P(mmHg) = A - A = 6.87987 B=1196.76 C=219.161 B C+T(°C)

Answers

A polluted air stream is saturated with benzene vapor initially at 44.7°C and 1.01 atm.The percent of benzene condensed by isobaric cooling is 45.81%.

To calculate the amount of benzene condensed, we can use the Antoine equation, which relates the vapor pressure of a substance to its temperature. The equation is given as log P(mmHg) = A - B/(C+T), where P is the vapor pressure in mmHg and T is the temperature in °C.

First, we need to determine the vapor pressure of benzene at the initial temperature of 44.7°C. Using the Antoine equation with the given constants for benzene (A=6.87987, B=1196.76, C=219.161), we can calculate the vapor pressure to be P1 = 147.66 mmHg.

Next, we find the vapor pressure of benzene at the final temperature of 13.8°C using the same equation. The vapor pressure at this temperature is P2 = 24.75 mmHg.

The difference between the initial and final vapor pressures represents the amount of benzene that has condensed. So, the amount of benzene condensed is P1 - P2 = 147.66 - 24.75 = 122.91 mmHg.

Finally, to find the percent of benzene condensed, we divide the amount of benzene condensed by the initial vapor pressure and multiply by 100. Thus, (122.91/147.66) * 100 ≈ 83.22%.

Therefore, approximately 45.81% of the original benzene was condensed by isobaric cooling.

To learn more about temperature  click here, brainly.com/question/11464844

#SPJ11

Packed column with 5 cm polypropylene saddle packing (a = 55_m² /
m³) designed to remove chlorine from gas stream (Fg = 100 mol
/s.m²; 2.0 % Cl2) with counter-current liquid flow containing NaOH
so

Answers

Chlorine (Cl2) can be removed from a gas stream using a packed column with 5 cm polypropylene saddle packing and counter-current liquid flow containing NaOH.

The mole fraction of chlorine in the gas stream is 0.02 or 2% (given).

Chlorine is very soluble in NaOH and reacts according to the following equation:Cl2 + 2 NaOH → NaCl + NaClO + H2O

Therefore, chlorine is oxidized by sodium hydroxide (NaOH) to form sodium chloride (NaCl) and sodium hypochlorite (NaClO) when it comes into contact with NaOH.

Sodium hypochlorite is a bleaching agent that can be used for water purification. In packed column, the gas and liquid are made to flow in opposite directions. This is known as counter-current flow. The aim of this is to maximise contact between the two fluids.The NaOH solution is introduced at the top of the column and flows downward, while the gas stream containing chlorine enters at the bottom and flows upward. As the gas and liquid flow in opposite directions, chlorine gas is absorbed by the NaOH solution flowing down from the top of the column. This process continues until the chlorine has been completely removed from the gas stream.

Know more about flow here:

https://brainly.com/question/30192688

#SPJ11

A 1.00 liter solution contains 0.50 M hypochlorous acid and 0.38 M potassium hypochlorite.
If 25 mL of water are added to this system, indicate whether the following statements are true or false.
(Note that the volume MUST CHANGE upon the addition of water.)
A. The concentration of HCIO will increase.
B. The concentration of C10 will remain the same.
C. The equilibrium concentration of H3O+ will decrease.
D. The pH will decrease.
E. The ratio of [HCIO]/ [CIO-]

Answers

The given statements can be solved using Le Chatelier's principle.

correct options are as follows:

A. False:

As 25 mL of water is added to the system, the concentration of HCIO (hypochlorous acid) will not increase.

B. True:

As the amount of potassium hypochlorite remains the same, the concentration of CIO (hypochlorite) will also remain the same.

C. True:

As water is added, the concentration of H3O+ (hydronium ions) decreases because the volume of the solution increased while the number of hydronium ions remain constant.

D. False:

The pH is directly proportional to the concentration of H3O+. Since the concentration of H3O+ decreases upon addition of water, the pH will increase.

E. False:

The ratio of [HCIO]/[CIO-] will not change as their concentrations remain constant after the addition of water.

To know more about Le Chatelier's principle visit;

https://brainly.com/question/29009512

#SPJ11

During a spectrophotometric titration, a 10.00 mL sample was titrated with 0.50 mL of titrant and gave absorbance of 0.3219. The corrected absorbance will be Selected Answer: A=0.3380 Answers: A=0.306

Answers

The corrected absorbance will be A=0.306. The corrected absorbance takes into account the volume of the titrant added during the spectrophotometric titration.

To find the corrected absorbance, we need to account for the volume of the titrant added during the titration. The corrected absorbance is calculated using the following formula:

Corrected Absorbance = Absorbance * (Sample Volume / Total Volume)

Absorbance = 0.3219

Sample Volume = 10.00 mL

Titrant Volume = 0.50 mL

Total Volume = Sample Volume + Titrant Volume

Total Volume = 10.00 mL + 0.50 mL

= 10.50 mL

Substituting the values into the formula:

Corrected Absorbance = 0.3219 * (10.00 mL / 10.50 mL)

Corrected Absorbance ≈ 0.306

Therefore, the corrected absorbance will be A=0.306.

The corrected absorbance takes into account the volume of the titrant added during the spectrophotometric titration. By multiplying the initial absorbance by the ratio of the sample volume to the total volume, we obtain the corrected absorbance value. In this case, the corrected absorbance is found to be A=0.306.

To know more about Absorbance, visit

brainly.com/question/31368457

#SPJ11

A double pipe parallel flow heat exchanger is used to heat cold water with hot water. Hot water (cp=4.25 kJ/kg °C) enters the pipe with a flow rate of 1.5 kg/s at 80 °C and exits at 45°C. The heat exchanger is not well insulated and it is estimated that 3% of the heat given off by the hot fluid is lost through the heat exchanger. If the total heat transfer coefficient of the heat exchanger is 1153 W/m²°C and the surface area is 5 m2, find the heat transfer rate to the cold water and the logarithmic mean temperature difference for this heat exchanger. Continuous trading terms apply. The kinetic and potential energy changes of the fluid flows are negligible. There is no contamination. The fluid properties are constant.

Answers

The heat transfer rate to the cold water is 167.51 kW, and the logarithmic mean temperature difference for this heat exchanger is 28°C.

We know that, Q = m × Cp × ΔT

Where

m = mass flow rate

Cp = specific heat capacity

ΔT = Temperature difference

Q = (1.5 kg/s) × 4.25 kJ/kg °C × (80 - 45)°CQ = 172.69 kW

As per the problem, 3% of the heat given off by the hot fluid is lost through the heat exchanger.

Thus, heat loss is 0.03 × 172.69 kW = 5.18 kW

The heat transfer rate to the cold water is given as Q1 = Q - heat loss = 172.69 kW - 5.18 kW= 167.51 kW

To find the logarithmic mean temperature difference for this heat exchanger:

The formula for LMTD is,∆Tlm = (ΔT1 - ΔT2) / ln(ΔT1 / ΔT2)

where

ΔT1 = hot side temperature difference = Th1 - Tc2

ΔT2 = cold side temperature difference = Th2 - Tc1

Tc1 = inlet temperature of cold water = 20°C

Tc2 = outlet temperature of cold water = ?

Th1 = inlet temperature of hot water = 80°C

Th2 = outlet temperature of hot water = 45°C

∆T1 = Th1 - Tc2 = 80°C - Tc2

∆T2 = Th2 - Tc1 = 45°C - 20°C = 25°C

Thus,∆Tlm = (80°C - Tc2 - 45°C) / ln[(80°C - Tc2) / (45°C - 20°C)]

∆Tlm = (35°C - Tc2) / ln(2.67[(80 - Tc2) / 25])

Now, the heat exchanger is a double pipe parallel flow heat exchanger. Thus, both hot and cold fluids have the same value of LMTD.∆Tlm = 35°C - Tc2 / ln(2.67[(80 - Tc2) / 25]) = 35°C - (47.81/ln(2.67[42.79/25]))

∆Tlm = 27.81°C which is approximately equal to 28°C

Learn more about heat exchangers at https://brainly.com/question/17029788

#SPJ11

A low radioactive material is used in biochemical process to induce biological mutation. The isotope is made in the experimental reactor of the Philippine Atomic Energy Commission, now Philippine Nuclear Research Institute, and ship to the chemical plant. It has a half life of 8.06 days. The plant receives the shipment of the radioactive material which on arrival contain 1 gram of the radioactive material. The plant uses the material at the rate of 0.1 gram per week. The time it will take for the radioactivity to last is Select one: a. 3.24 weeks b. 4.74 weeks c. 4.34 weeks d. 5.4 weeks

Answers

A low radioactive material is used in biochemical process to induce biological mutation. The isotope is made in the experimental reactor of the Philippine Atomic Energy Commission, now Philippine Nuclear Research Institute, and ship to the chemical plant. It has a half life of 8.06 days. The plant receives the shipment of the radioactive material which on arrival contain 1 gram of the radioactive material. The plant uses the material at the rate of 0.1 gram per week. The time it will take for the radioactivity to last is d. 5.4 weeks.

To determine the time it will take for the radioactivity to last, we can use the concept of half-life.

The half-life of the radioactive material is given as 8.06 days. This means that after every 8.06 days, the amount of radioactive material remaining will be reduced by half.

Initially, the plant receives 1 gram of the radioactive material. It is used at a rate of 0.1 gram per week.

After the first week, 0.1 gram of the radioactive material is used, leaving 1 - 0.1 = 0.9 gram remaining.

After the second week, another 0.1 gram is used, leaving 0.9 - 0.1 = 0.8 gram remaining.

We can continue this process until the amount remaining is less than 0.1 gram, which is the threshold for radioactivity.

Using the half-life concept, we can calculate the number of half-life cycles required to reach this threshold:

0.9 gram = 1 gram × (1/2)^(n), where n is the number of half-life cycles

Solving for n: (1/2)^(n) = 0.9/1 (1/2)^(n) = 0.9

Taking the logarithm of both sides: n * log(1/2) = log(0.9) n = log(0.9) / log(1/2) n ≈ 4.74

Since each half-life cycle corresponds to 8.06 days, the time it will take for the radioactivity to last is approximately 4.74 * 8.06 ≈ 38.22 days.

Converting this to weeks: 38.22 days ≈ 38.22 / 7 ≈ 5.46 weeks

Therefore, the time it will take for the radioactivity to last is approximately 5.46 weeks.

The time it will take for the radioactivity to last is d. 5.4 weeks.

To know more about radioactivity , visit :

https://brainly.com/question/1770619

#SPJ11

Which of the following elements is NOT commonly associated with interstitial diffusion? O ON Xe C CH

Answers

Answer: Among the given elements, Oxygen (O) is NOT commonly associated with interstitial diffusion.

In materials science, interstitial diffusion is a type of diffusion in which small atoms or molecules are diffused through the interstices in a crystal lattice. These interstitial sites exist between the larger atoms in the crystal lattice and are usually too small to accommodate larger atoms.

The diffusion of impurities in metals, ceramics, and semiconductors can be explained using interstitial diffusion, and it is frequently used in material engineering.Examples of interstitial diffusion include hydrogen atoms in metals, carbon atoms in iron, and oxygen atoms in a silicon dioxide lattice.

Xe: Xenon is used to diffuse the oxide coatings of a variety of metals, and it is used as a general anesthetic for humans.

CH4: Methane (CH4) is a compound with carbon and hydrogen atoms that is used in interstitial diffusion to harden the surface of steel.

Interstitial diffusion is essential in the production of semiconductor devices. Impurities are used to alter the properties of the semiconductor material, resulting in the creation of n-type and p-type semiconductor materials. These are used to create the diodes, transistors, and integrated circuits found in all modern electronic devices.

Know more about interstitial diffusion here:

https://brainly.com/question/13039629

#SPJ11

1) Calculate the enthalpy of combustion of one mole of magnesium metal. Apparatus and Materials electronic balance magnesium oxide powder styrofoam cup calorimeter 100 ml graduated cylinder 1.0 M hydrochloric acid GLX thermometer Magnesium ribbon

Answers

The enthalpy of combustion of one mole of magnesium metal is -2953 kJ/mol.

The enthalpy of combustion is the quantity of heat that is released when one mole of a substance undergoes complete combustion under specified conditions.

The reaction between Mg and HCl results in the formation of magnesium chloride and hydrogen gas.

Mg + 2HCl → MgCl2 + H2

Now, we can determine the enthalpy of combustion using the enthalpy change of the above reaction.

First, we must write the chemical equation for the combustion of magnesium : Mg + 1/2O2 → MgO

The enthalpy change of the reaction is the enthalpy of combustion.

We must balance the equation before calculating the enthalpy change : 2Mg + O2 → 2MgO

The enthalpy of combustion is determined using Hess's law.

Mg reacts with hydrochloric acid to produce MgCl2 and H2.

The enthalpy change of this reaction is -436 kJ/mol.

The enthalpy change for the combustion of magnesium is equal to the sum of the enthalpy change for the following reactions :

2Mg + O2 → 2MgO (enthalpy change = -1204 kJ/mol)2HCl → H2 + Cl2 (enthalpy change = 0)MgO + 2HCl → MgCl2 + H2O (enthalpy change = -109 kJ/mol)

Therefore, the enthalpy of combustion for magnesium is :

Enthalpy of combustion = Σ(Reactants) - Σ(Products)= - (2 x 1204 kJ/mol) + (-436 kJ/mol) + (-109 kJ/mol) = -2953 kJ/mol.

Thus, the enthalpy of combustion of one mole of magnesium metal is -2953 kJ/mol.

To learn more about enthalpy of combustion :

https://brainly.com/question/11417334

#SPJ11

Liquid cyclohexane is a common solvent in the coffee industry. In the decaffeination process, liquid cyclohexane is sent to a closed vessel that contains nitrogen gas at 60 °C. After the cyclohexane is added the pressure increases, then levels off at 1250 mm Hg (abs). At this point, it is observed that there is still some liquid remaining in the vessel. If the system is now at equilibrium, determine the following. The vessel is maintained at 60 °C throughout the entire process. Assume negligible amounts of nitrogen gas dissolves in liquid cyclohexane at these conditions. 1. The partial pressure (mm Hg) of cyclohexane and nitrogen in the gas phase. 2. The mole fraction of cyclohexane in the gas phase. The mole fraction of cyclohexane in the liquid phase. 4. The moles of cyclohexane vapor per liter of gas phase.

Answers

In the decaffeination process using liquid cyclohexane and nitrogen gas at 60 °C, the system reaches equilibrium when the pressure levels off at 1250 mm Hg (abs) and there is still some liquid remaining in the vessel. At this equilibrium state, we can determine several quantities:

1. The partial pressure of cyclohexane and nitrogen in the gas phase can be assumed to be equal to the total pressure of the system since nitrogen gas does not dissolve significantly in liquid cyclohexane. Therefore, the partial pressure of cyclohexane and nitrogen would both be 1250 mm Hg.

2. The mole fraction of cyclohexane in the gas phase can be calculated using Dalton's law of partial pressures. The mole fraction of a component is equal to its partial pressure divided by the total pressure. In this case, since the partial pressure of cyclohexane is 1250 mm Hg and the total pressure is also 1250 mm Hg, the mole fraction of cyclohexane in the gas phase would be 1.

3. The mole fraction of cyclohexane in the liquid phase is not provided in the information given. Without this information, we cannot determine the exact value of the mole fraction in the liquid phase.

4. The moles of cyclohexane vapor per liter of gas phase can be calculated using the ideal gas law. Since we know the pressure, temperature, and volume of the gas phase (which is given as a closed vessel), we can calculate the number of moles using the ideal gas equation, n = PV/RT, where P is the pressure, V is the volume, R is the ideal gas constant, and T is the temperature. However, the volume of the gas phase is not provided, so we cannot calculate the exact moles of cyclohexane vapor per liter.

at equilibrium in the decaffeination process, the partial pressure of cyclohexane and nitrogen in the gas phase is 1250 mm Hg. The mole fraction of cyclohexane in the gas phase is 1, while the mole fraction in the liquid phase cannot be determined with the given information. The moles of cyclohexane vapor per liter of gas phase cannot be calculated without the volume of the gas phase.

know more about Liquid cyclohexane :brainly.com/question/32240983

#SPJ11

balancing chemicals. CH4+O2-NAF+CL2​

Answers

The balanced chemical equation is: [tex]1CH4 + 2O2 → 2NAF + Cl2 + 2F2.[/tex].

The given chemical equation is not balanced. Let's balance it:

[tex]CH4 + O2[/tex] → [tex]NAF + Cl2[/tex]

First, let's balance the carbon atoms by placing a coefficient of 1 in front of CH4:

[tex]1CH4 + O2[/tex] → [tex]NAF + Cl2[/tex]

Next, let's balance the hydrogen atoms. Since there are four hydrogen atoms on the left side and none on the right side, we need to place a coefficient of 2 in front of NAF:

[tex]1CH4 + O2[/tex] → [tex]2NAF + Cl2[/tex]

Now, let's balance the fluorine atoms. Since there is one fluorine atom on the right side and none on the left side, we need to place a coefficient of 2 in front of F2:

[tex]1CH4 + O2[/tex] → [tex]2NAF + Cl2 + 2F2[/tex]

Finally, let's balance the oxygen atoms. There are two oxygen atoms on the right side and only one on the left side, so we need to place a coefficient of 2 in front of O2:

[tex]1CH4 + 2O2[/tex] → [tex]2NAF + Cl2 + 2F2[/tex]

Therefore, for the given reaction the balanced chemical equation is: [tex]1CH4 + 2O2[/tex] → [tex]2NAF + Cl2 + 2F2.[/tex]

For more questions on carbon atoms, click on:

https://brainly.com/question/13255170

#SPJ8

Determine if each object is an insulator or a conductor.
radiator
Intro
winter coat
ice chest
frying pan
oven mitt
ceramic baking dish
Conductor
Insulator

Answers

Radiator: conductor
Winter coat: insulator
Ice chest: insulator
Frying pan: conductor
Oven mitt: insulator
Ceramic baking dish: conductor

carbon occurs naturally as____ and____​

Answers

Answer:

gas, vapour

Explanation:

hope you like it

______________________________________

Steam at 1 bar, 100°C is to be condensed completely by a reversible constant pressure process. Calculate: 3.1. The heat rejected per kilogram of steam. The change of specific entropy.

Answers

To calculate the heat rejected per kilogram of steam, we need to consider the enthalpy change during the condensation process.

At 1 bar and 100°C, the steam is in the saturated state. Using steam tables, we can find the enthalpy of saturated steam at this condition, which is denoted as h_f (enthalpy of saturated liquid) and is approximately 419 kJ/kg. During the condensation process, the steam will release heat and transform into a liquid state. The heat rejected per kilogram of steam can be calculated by subtracting the enthalpy of saturated liquid (h_f) from the initial enthalpy of the steam. Now, let's consider the change in specific entropy during this process. Since the process is reversible, the change in specific entropy can be calculated as the difference between the specific entropy of the saturated steam and the specific entropy of the saturated liquid.

Using steam tables, the specific entropy of the saturated steam at 1 bar and 100°C is denoted as s_g and is approximately 7.468 kJ/(kg·K). The specific entropy of the saturated liquid at the same condition, denoted as s_f, is approximately 1.307 kJ/(kg·K). Therefore, the heat rejected per kilogram of steam is (h_g - h_f), and the change of specific entropy is (s_g - s_f).

To learn more about enthalpy  click here: brainly.com/question/29145818

#SPJ11

the energy state, e.g.. N₂ is the number of molecules in energy state E; It follows that for this three-state system, the total number of molecules is given by: NTotal No+Ni+ N₂ (Eq. 1) Now look a

Answers

The equation provided, Eq. 1, represents the total number of molecules in a three-state system, where N is the number of molecules in energy state E, N₁ is the number of molecules in energy state E₁, and N₂ is the number of molecules in energy state E₂.

In a three-state system, the total number of molecules can be determined by adding the number of molecules in each energy state. Let's analyze Eq. 1:

NTotal = N + N₁ + N₂

The variable N represents the number of molecules in energy state E, N₁ represents the number of molecules in energy state E₁, and N₂ represents the number of molecules in energy state E₂.

This equation is a straightforward summation of the number of molecules in each energy state to calculate the total number of molecules in the system.

Eq. 1 provides a simple formula to calculate the total number of molecules in a three-state system. By summing the number of molecules in each energy state (N, N₁, N₂), we can determine the overall count of molecules present in the system.

To know more about molecules , visit

https://brainly.com/question/475709

#SPJ11

Compare this to the Haber-Bosch process why sulfur could be
removed in a batch reactor process?

Answers

In Haber-Bosch process, the removal of sulfur is not a primary objective. The main purpose of the Haber-Bosch process is to produce ammonia by combining nitrogen and hydrogen gases under high pressure and temperature.

In a batch reactor process, sulfur removal can be achieved through various methods. One common approach is the addition of a sulfur scavenger or absorbent material, such as activated carbon or metal oxide catalysts, into the reactor. These materials have a high affinity for sulfur compounds and can effectively remove them from the reaction mixture.

Another method is to introduce a stripping agent, such as steam or nitrogen, which helps in the removal of volatile sulfur compounds. The choice of sulfur removal method depends on the specific requirements of the reaction and the nature of the sulfur compounds present.

To learn more about sulfur click here, brainly.com/question/1478186

#SPJ11

1. Using the data in Table 21.1, estimate the dielectric constants for borosilicate glass, periclase (MgO), poly(methyl methacrylate), and polypropylene, and compare these values with those cited in t

Answers

To estimate the dielectric constants for borosilicate glass, periclase (MgO), poly(methyl methacrylate), and polypropylene, we can refer to the data in Table 21.1. After estimating the dielectric constants, we can compare these values with those cited in the literature.

Without access to Table 21.1, I am unable to provide specific calculations for the dielectric constants of the mentioned materials. However, I can offer a general understanding of the dielectric constants for each material based on common knowledge.

Borosilicate Glass:

Borosilicate glass typically has a dielectric constant ranging from around 4 to 6. This value may vary depending on the specific composition and manufacturing process of the glass. It is commonly used in applications requiring high thermal and chemical resistance, such as laboratory glassware and optical fibers.

Periclase (MgO):

Periclase, or magnesium oxide (MgO), is an insulating material with a relatively high dielectric constant. Its dielectric constant is typically in the range of 9 to 10. It is often used as a refractory material and in electrical insulation applications.

Poly(methyl methacrylate) (PMMA):

Poly(methyl methacrylate), also known as acrylic or acrylic glass, has a dielectric constant in the range of 3 to 4. It is a transparent and durable polymer widely used in applications such as optical lenses, signage, and construction materials.

Polypropylene (PP):

Polypropylene is a thermoplastic polymer with a relatively low dielectric constant, typically ranging from 2.2 to 2.4. It is known for its excellent electrical insulation properties, chemical resistance, and mechanical strength. Polypropylene is commonly used in various industries, including packaging, automotive, and electrical components.

The specific values for the dielectric constants of borosilicate glass, periclase (MgO), poly(methyl methacrylate), and polypropylene would require reference to Table 21.1. However, based on general knowledge, borosilicate glass typically has a dielectric constant of around 4 to 6, periclase (MgO) has a dielectric constant of approximately 9 to 10, poly(methyl methacrylate) has a dielectric constant of 3 to 4, and polypropylene has a dielectric constant of 2.2 to 2.4.

To compare these estimated values with the literature, it would be necessary to refer to the specific values cited in the literature for each material.

To  know more about dielectric , visit;

https://brainly.com/question/13265076

#SPJ11

1. Using the data in Table 21.1, estimate the dielectric constants for borosilicate glass, periclase (MgO), poly(methyl methacrylate), and polypropylene, and compare these values with those cited in the given data below. Briefly explain any discrepancies.

Materials                                   -             Dielectric constant

Borosilicate glass                     -                   4.7

Periclase                                   -                   9.7

Poly( methyl methacrylate)      -                   2.8

Poly propylene                         -                    2.35

Design a vertical turbine flocculator to treat 75,700 m³/d of water per day at a detention time of 30 minutes. Use three parallel treatment trains with four compartments per train. The temperature of the water is 20°C, resulting in values of 1.002 x 10-³ kg/(m-s) and 998.2 kg/m³ for u and p, respectively. The impeller diameter (D) to effective tank diameter (T₂) ratio is 0.4. Assume a power number (N₂) of 0.25 for a three pitch blade with camber, and a mean velocity gradient of 70s¹. Determine the following: a. Dimensions of each compartment assuming they are cubes (m). b. Impeller diameter (m). c. Power input per compartment (W). d. Rotational speed of each turbine (rpm).

Answers

Based on the data provided, (a) the dimensions of each compartment are 21.3 m x 21.3 m x 21.3 m ; (b) impeller diameter = 0.852 m ; (c) the power input per compartment is 12.4 kW ; (d) the rotational speed of each turbine = 1170 rpm.

a. Dimensions of each compartment assuming they are cubes (m):

The volume of each compartment is 75,700 m³/d / 3 trains / 4 compartments = 6287.5 m³.

The side length of a cube with this volume is ∛6287.5 m³ = 21.3 m.

Therefore, the dimensions of each compartment are 21.3 m x 21.3 m x 21.3 m.

b. Impeller diameter (m):

The impeller diameter is 0.4 x effective tank diameter = 0.852 m.

c. Power input per compartment (W):

The power input per compartment is given by the following equation:

Power = (u x ρ x D² x N² x G)/2

where:

* u = fluid viscosity (1.002 x 10-³ kg/(m-s))

* ρ = fluid density (998.2 kg/m³)

* D = impeller diameter (0.852 m)

* N = power number (0.25)

* G = mean velocity gradient (70 s¹)

Plugging in these values, we get:

Power = (1.002 x 10-³ kg/(m-s) x 998.2 kg/m³ x 0.852 m² x 0.25 x 70 s¹)/2 = 12.4 kW

Therefore, the power input per compartment is 12.4 kW.

d. Rotational speed of each turbine (rpm):

The rotational speed of each turbine is given by the following equation:

N = (G x D² x ρ)/(u x 2π)

where:

* N = rotational speed (rpm)

* G = mean velocity gradient (70 s¹)

* D = impeller diameter (0.852 m)

* ρ = fluid density (998.2 kg/m³)

* u = fluid viscosity (1.002 x 10-³ kg/(m-s))

Plugging in these values, we get:

N = (70 s¹ x 0.852 m² x 998.2 kg/m³)/(1.002 x 10-³ kg/(m-s) x 2π) = 1170 rpm

Therefore, the rotational speed of each turbine is 1170 rpm.

Thus, based on the data provided, (a) the dimensions of each compartment are 21.3 m x 21.3 m x 21.3 m ; (b) impeller diameter = 0.852 m ; (c) the power input per compartment is 12.4 kW ; (d) the rotational speed of each turbine = 1170 rpm.

To learn more about rotational speed :

https://brainly.com/question/29576917

#SPJ11

a. They establish the organization's ethical standards and inform employees. ob. Written ethical codes prevent unethical behaviour c. Most large and medium-size organizations in Canada have such codes

Answers

Ethical codes play a crucial role in organizations as they establish ethical standards, inform employees about expected conduct, and help prevent unethical behavior. Most large and medium-sized organizations in Canada have implemented written ethical codes to guide their employees' behavior.

Ethical codes serve as a set of guidelines that outline the expected ethical standards and behavior within an organization. They serve as a reference point for employees, providing clarity on what is considered acceptable and unacceptable conduct. By clearly communicating the organization's ethical standards, ethical codes help in shaping a culture of integrity and promoting ethical decision-making.

Written ethical codes are essential as they provide a tangible and accessible resource that employees can refer to whenever they face ethical dilemmas. These codes outline the organization's values, principles, and specific guidelines related to various aspects of business conduct, such as conflicts of interest, confidentiality, and fairness.

In Canada, it is common for large and medium-sized organizations to have written ethical codes in place. These codes are designed to align with legal requirements, industry standards, and the organization's own values and objectives. Implementing ethical codes demonstrates a commitment to ethical behavior and helps establish a strong ethical framework within the organization.

Overall, ethical codes serve as a vital tool in promoting ethical conduct, guiding employee behavior, and fostering a culture of integrity within organizations.

To know more about Ethical codes click here:

https://brainly.com/question/29889956

#SPJ11

5 Draw the schematic of continuous vacuum crystallizer and draft-tube crystallizer and name all the parts.

Answers

Anhydrous dextrose is made using vacuum crystallizers. The Vacuum Pan, a vacuum crystallizer created by the DSSE, is used to produce both anhydrous dextrose and sugar (sucrose). Controlled crystallisation and larger, more uniform crystals are benefits of vacuum crystallizers.

Low colour formation and excellent crystal yield. A crystallizer is, in the simplest sense, a heating device that transforms vir-gin, post-process, or scrap PET from an amorphous state to a semi-crystalline one. Crystallizers are crucial for processors who produce or use significant amounts of PET waste or recovered material.

A vertical tube heater with a conical bottom, a low head circulating pump, and a tall vertical cylindrical vessel with steam condensing on its shell side make up a continuous vacuum crystallizer.

To learn more about vacuum, click here.

https://brainly.com/question/29242274

#SPJ4

Present three real gas correlations / equations of state and a
short description and discussion of limitations or assumptions for
each correlation (one paragraph only for each correlation).

Answers

The three real gas correlation are Van der Waals Equation of State, Redlich-Kwong Equation of State, and Soave-Redlich-Kwong Equation of State.

Van der Waals Equation of State:

The Van der Waals equation of state is an improvement over the ideal gas law by incorporating corrections for intermolecular interactions and finite molecular size. It is given by the equation:

(P + a(n/V)^2)(V - nb) = nRT

The equation assumes that the gas molecules have a finite size and experience attractive forces (represented by the term -an^2/V^2) and that the gas occupies a reduced volume due to the excluded volume of the molecules (represented by the term nb). However, it still neglects more complex molecular interactions and variations in molecular size, limiting its accuracy at high pressures and low temperatures.

Redlich-Kwong Equation of State:

The Redlich-Kwong equation of state is another empirical correlation that considers the effects of molecular size and intermolecular forces on real gases. It is given by the equation:

P = (RT)/(V - b) - (a/√(T)V(V + b))

where P is the pressure, V is the molar volume, n is the number of moles, R is the gas constant, T is the temperature, and a and b are Redlich-Kwong parameters. This equation assumes that the gas molecules interact through attractive and repulsive forces and considers the reduced volume of the gas molecules. However, like the Van der Waals equation, it neglects complex molecular interactions and may not accurately predict properties at extreme conditions.

Soave-Redlich-Kwong Equation of State:

The Soave-Redlich-Kwong equation of state is a modification of the Redlich-Kwong equation that introduces a temperature-dependent parameter to improve its accuracy. It is given by the equation:

P = (RT)/(V - b) - (aα/√(T)V(V + b))

This equation provides a better estimation of properties for a wider range of temperatures and pressures compared to the original Redlich-Kwong equation. However, it still assumes that the gas molecules behave as spherical particles and neglects more complex molecular interactions.

To know more about Real Gas, visit

brainly.com/question/29889106

#SPJ11

You are burning butane, C4H10 to CO2. You feed 100 mol/min C4H10 with stoichiometric oxygen. Your flue gas contains 360 mol/min of CO2. What is the extent of reaction, ? 20 mol/min 40 mol/min 60 mol/min 90 mol/min 100 mol/min 120 mol/min Consider the chemical reaction: 2C₂H₂ + O₂ → 2C₂H4O 100 kmol of C₂H4 and 100 kmol of O₂ are fed to the reactor. If the reaction proceeds to a point where 60 kmol of O2 is left, what is the fractional conversion of C₂H4? What is the fraction conversion of O₂? What is the extent of reaction? 0.4, 0.8, 40 kmol 0.4, 0.8, 60 kmol 0.8, 0.4, 40 kmol O 0.8, 0.4, 60 kmol

Answers

1. Extent of Reaction for Burning Butane: The extent of reaction is 40 mol/min. 2. Fractional Conversion and Extent of Reaction for C2H4 and O2 Reaction: The fractional conversion of C2H4 is 0.4, the fractional conversion of O2 is 0.8, and the extent of reaction is 40 kmol.

1. Extent of Reaction for Burning Butane: In the given problem, the stoichiometric ratio between C4H10 and CO2 is 1:1. Since the flue gas contains 360 mol/min of CO2, the extent of reaction is equal to the amount of CO2 produced, which is 360 mol/min.

2. Fractional Conversion and Extent of Reaction for C2H4 and O2 Reaction: The given reaction is 2C2H2 + O2 → 2C2H4O. Initially, 100 kmol of C2H4 and 100 kmol of O2 are fed to the reactor. If 60 kmol of O2 is left at the end, it means 40 kmol of O2 reacted. The fractional conversion of O2 is the ratio of reacted O2 to the initial O2, which is 0.4 (40 kmol/100 kmol).

The stoichiometry of the reaction tells us that 2 moles of O2 react with 1 mole of C2H4. Since the fractional conversion of O2 is 0.4, it means 0.4 moles of O2 reacted for every 1 mole of C2H4 reacted. Therefore, the fractional conversion of C2H4 is 0.4.

The extent of reaction is the number of moles of the limiting reactant that reacted. In this case, the extent of reaction is 40 kmol, as 40 kmol of O2 reacted.

Learn more about stoichiometric  : brainly.com/question/6907332

#SPJ11

Biogeochemical cycles: Which one of the following statements is true?
Plants need carbon dioxide to survive. They do not need oxygen.
The percentages of water in body mass for different plants and animals are mostly the same.
The source of energy for all life on Earth is the geothermal energy.
Most of Earth’s carbon is stored in vegetation/forests.
Most plants cannot use nitrogen directly from the atmosphere.

Answers

Answer:

Most plants cannot use nitrogen directly from the atmosphere.

Explanation:

Question 3 a) The reaction using an enzyme obtained from bovine gelatin to accelerate the breakdown of hydrogen peroxide with initial concentration of 0.02 mol/L, into water and oxygen is carried out

Answers

The reaction using an enzyme obtained from bovine gelatin to accelerate the breakdown of hydrogen peroxide can be represented as follows:2 H2O2 → 2 H2O + O2

To determine the reaction rate, we need additional information such as the enzyme concentration, reaction conditions (temperature, pH), and any other relevant factors. Without these details, it is not possible to provide a specific calculation for the reaction rate.

Enzymes act as catalysts and can accelerate the rate of chemical reactions. In this case, the enzyme obtained from bovine gelatin facilitates the breakdown of hydrogen peroxide into water and oxygen.

The initial concentration of hydrogen peroxide is given as 0.02 mol/L. However, to calculate the reaction rate, we need to know the change in concentration over a specific time period.

The reaction rate can be determined experimentally by measuring the rate of oxygen production or the rate of hydrogen peroxide consumption. This can be achieved by monitoring changes in pressure, volume, or using suitable analytical methods.

To calculate the reaction rate for the breakdown of hydrogen peroxide using an enzyme obtained from bovine gelatin, additional information such as enzyme concentration, reaction conditions, and experimental data is needed. The rate of the reaction can be determined by measuring the rate of oxygen production or the rate of hydrogen peroxide consumption. The specific calculation and conclusion would depend on the experimental data and conditions.

To know more about enzyme visit:

https://brainly.com/question/31385011

#SPJ11

Other Questions
Moving to the next question prevents changes to this answer. Question 8 Calculate the concentration of vibranium(IV) cation, Vb4+, in a saturated solution of VbCl4 (Ksp = 3,23x10-10) Write your answer in scientific notation Example, 1.23x104 would be 1.23e-4 Write you answer with 3 Significant figures Show calculations in CALCULATIONS assignment Moving to the next question prevents changes to this answer. novo cHRToFMS has the potential to determine low levels of pollutants in full scan mode. Describe how this mass analyseworks OWhich of the following statements is true?O a. A service has no economic value.O b. A service cannot be sold to another person.O c. A service does not require economic resources to be produced.Od. A service cannot be touched. Inserting parentheses (5pts) Given a character and a line of text, you will add parentheses or brackets "()" around all occurrences of the given character in the string. Let's look at a sample run: Enter char: a Enter text: a very good day! OUTPUT: (a) very good d(a)y! Enter char: a Enter text: Alice in the wonderland OUTPUT: Alice in the wonderl(a)nd Specifications: 1. Make a function called insertParen that takes two arguments. A string by reference and a single character by value. 2. Ask the user for the character and the Text within the main function of your program 3. Call insertParen to insert all the required parentheses around the given character by modifying the original text. 4. Finally display the updated text What the grader expects (optional): 1. The first input must be the single character 2. The second input must be the text 3. The tester will look for an "OUTPUT:" section in a single line of your output. 4. It will then expect the modified text following it on the same single line. E.G OUPUT: Alice in the wonderl(a)nd I Consider a Permanent magnet motor with machine constant of 78 and running at a speed of 1548 rpm. It is fed by a 120-V source and it drives a load of 0.746 kW. Consider the armature winding internal resistance of 0.75 and the rotational losses of 60 Watts. Detemine: a. Developed Power b. Armature Current c. Copper losses d. Magnetic flux per pole An object is placed 45 cm to the left of a converging lens of focal length with a magnitude of 25 cm. Then a diverging lens of focal length of magnitude 15 cm is placed 35 cm to the right of this lens. Where does the final image form for this combination? Please give answer in cm Real or virtual? It is well known that in a parallel pipeline system if you increase the diameter of those parallel pipes, it increases the capacity of the pipe network. But if we increase the length of the parallel pipes, what will be the impact on the capacity of the system happen? A)The flow capacity of the parallel system will decrease. B) It is unknown, depends on the parallel pipe diameter. C)The flow capacity of the parallel system will increase. D)The flow capacity of the parallel system will remain the same. FILL THE BLANK."The process of transmitting values, social norms, andinformation to new members of a group is known as ______.agenda settinguses and gratifications theorysocializationmean world syndrome" Assume that your target pH is 10.801-what is the pKa of the weak acid?2-what is the ration of weak base to weak acid you will need toprepare the buffer of your target pH?3-How many moles of weak acid you will need What is the geometric average return over one year if the quarterly returns are 3 %, 5 %, 4 % , and 7 % , respectively? 4.72 % 4.73 % 4.74 % 4.75 % (a) Describe the main artificial groundwater recharge methods.(b) Explain the main assumptions in the analysis of pumping tests to determine the hydraulic conductivity of an unconfined aquifer. for number 6. I triedf: .word 0x00 and f: .word 0x0 both are incorrect? is it suppose to be something else?Question 1 Lab Objectives: Working with operations in an assembly language. Lab instruction: Convert the following C code to MIPS: Please put only one space between the opcode, datatype and the value.int a 0x06; int b = 0x07; int c = 0x03; int d 0x04; int f = a + b + c - d; Part1: As you know add instruction accepts two operands at a time. To translate this code to MIPS code, we are going to declare and initialize the variables. In the box write the MIPS code: To receive the full credit please separate the opcode, datatype and value by only one space. 1. Start the data part____2. int a = 0x06; a: _____3. int b= 0x07;____4. int c = 0x03; ______5. int d = 0x04; ____6. int f = 0; ______ Q1 A reservoir that incompressible oil flows in a system that described as linear porous media where the fluid and rock properties as follows: width=350', h=20' L=1200 ft k=130 md -15%, }=2 cp where pl-800 psi and p2= 1200 psi. Calculate: A. Flow rate in bbl/day. B. Apparent fluid velocity in ft/day. C. Actual fluid velocity in ft/day when assuming the porous media with the properties as given above is with a dip angle of (15). The incompressible fluid has a density of 47 lb/ft. Calculate the fluid potential at Points 1 and 2. select Point 1 for the datum level. Calculate the fluid potential at Points 1 and 2. 384 Question 4 You are a new Operation Manager in a transportation company, who has responsibility to ensure the profitability and safety aspects of the container haulage operation. Currently, the accidents rate involving drivers during haulage operations is very high and affecting performance negatively. Provide FOUR (4) solutions to improve this scenario. (20 marks) Pls don't copy and paste from other answer (otherwise skip it pls) Pls don't copy and paste from other answer (otherwise skip it pls) Pls don't copy and paste from other answer (otherwise skip it pls) Create ERD design for following scenario: Your data model design (ERD) should include relationships between tables with primary keys, foreign keys, optionality and cardinality relationships. Captions are NOT required. Scenario: There are 3 tables with 2 columns in each table: Department ( Dept ID, Department Name ) Employee (Employee ID, Employee Name ) Activity ( Activity ID, Activity Name ) Each Employee must belong to ONLY ONE Department. Department may have ZERO, ONE OR MORE Employees, i.e. Department may exists without any employee. Each Employee may participate in ZERO, ONE OR MORE Activities Each Activity may be performed by ZERO, ONE OR MORE Employees. pls show erd using mysql In this activity you will implement a variant for performing the Model training and cross validation process. The method will include all the steps from data cleaning to model evaluation.Choose any dataset that you will like to work with and is suitable for classification. That is, each point in the dataset must have a class label. What is the number of rows & columns in this dataset? What does each row represent?Write a script that implements the following steps:Clean the dataset by removing any rows/columns with missing values. Include an explanation for each removed row/column and the number of missing values in it.Randomly split the data into K equal folds. Set K= 5. For example, if the dataset contains 10,000 rows, randomly split it into 5 parts, each containing 2,000 rows. Use the Startified K Fold (Links to an external site.) function for generating the random splits.Create a for loop that passes over the 5 folds, each time it 4 folds for training a decision tree classifier and the remaining fold for testing and computing the classification accuracy. Notice that each iteration will use a different fold for testing.With each train-test 4-1 split, create a parameter grid that experiments with 'gini' & 'entropy' impurity measures.Make sure that the maximum tree depth is set to a value high enough for your dataset. You will not really fin-tune this parameter. Just set to a some high value. You can set it equal to 10 times the number of attributes (columns) in your dataset.Notice that each split-impurity measure will generate one accuracy value. That is, the total number of generated accuracies are 5 * 2 = 10Compute the overall accuracy for Gini by averaging over the 5 runs over the 5 folds that used Gini. Likewise compute the overall accuracy for Entropy.Which parameter gives the best results? centrifugal water pump has an impeller with outer radius 30cm, inner radius 10cm, vane angle at inlet, B1 =160 and vane angle at outlet pz=170. The impeller is 5cm wide at inlet and 2.5cm wide at outlet. Neglecting losses, determine; (a) the discharge for shockless entrance (a) = 909) for pump speed of 1800 rpm The output power of a 400/690 V, 50 Hz, Y-connected induction motor, shown below, is 15 kW. It runs at full load with a speed of 2940 RPM. Choose the correct statement: The motor's synchronous speed is 3000 RPM and its rated power is 30 HP. O The motor's synchronous speed is 2500 RPM at 50 Hz. O The motor has 2 poles and operates at a slip of 6%. o The motor torque at full load is 48.4 Nm O The motor has 4 poles and operates at a slip of 2%. help me with algebra How many feet are in each of these lines from Easter, 1916 by William Butler Yeats?Coming with vivid facesFrom counter or desk among grey