Calculate the maximum amount of picric acid (in grams) that can be obtained if 0.552mL of phenol (density

Answers

Answer 1

It is critical to develop a PheDH with specificity and high activity since it is crucial for the manufacture of chiral pharmacological intermediates and the detection of phenylketonuria.

Here, a PheDH gene, pdh, was discovered that encodes a novel BhPheDH with 61.0% similarity to the previously identified PheDH from Microbacterium sp. In comparison to the PheDH from Nocardia sp., the BhPheDH demonstrated superior stability in hot environments (40–70°C) and optimal activity at 60°C and pH 7.0. Additionally, sodium salt has the potential to greatly boost both its activity and thermostability. The residual activity of the BhPheDH was found to be 1.8-fold higher than that of the control group following incubation for 2 hours in 3 M NaCl at 60 °C (without NaCl).

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Related Questions

Consider a fusion reaction in which a proton fuses with a neutron to form a deuterium nucleus. How much energy is released in this reaction?(The mass of the deuterium nucleus is 2.01355u).

Answers

Energy released in the reaction in which a proton fuses with a neutron to form a deuterium nucleus is calculated as 2.234 MeV.

What do you understand by a fusion reaction?

In fusion reaction, two light nuclei merge to form single heavier nucleus. The process releases energy because total mass of the resulting single nucleus is less than the mass of two original nuclei. And the leftover mass becomes energy.

form a deuterium nucleus: 1^1H+0^1n⟶1^2H+γ The masses are 1^1H(1.0078u) 0^1n(1.0087u) and 1^2H(2.0141u) the γ -ray photon is massless.

Δm= 1.0078 +1.0087- 2.0141

Energy released = 2.4*10^-3 * 931 MeV

= 2.234 MeV

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Transpiration is when a plant releases water vapor through its stomata, which are pours in its leaves and stems. What other process in the water cycle is this most similar to? explain your reasoning.

Answers

In addition to respiration, a process known as guttation involves the loss of liquid water from a plant's healthy leaf or stem, mostly through water stomata.

What is the transpiration process?

The physiological loss of water . water of water vapor, mostly from the stomata of leaves, but also by evaporation first from surfaces of leaf tissue, flowers, and stems, is known as transpiration.

Why is transpiration necessary to plants?

Additionally, by providing evaporative cooling, vegetation transpiration makes a major contribution to the energy balance of the leaf. Additionally, transpiration speeds up the movement of nutrients and water from roots to the shoots. Transpiration occurs when water vapor leaves a plant through the stomata.

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Classify the reaction in each of the following equations.
a. FeCl2 (aq) + Mg → MgCl2 (s) + Fe(s)

b. NH3 (g) → N2 (g) + H2 (g)

Answers

Answer

a. Single displacement

b. Decomposition

When classifying chemical reactions, consider how reactants change to form the products.

An equation for a chemical reaction has a left side and a right side. The arrow separates the left and right sides.

The left side is called the reactants. The right side is called the products.

Each product or reactant can be one or more elements.

Some Types of Reactions

We can use letters* to represent products and reactants in a reaction.

Synthesis

Two reactants become one product.

A + B  →  ABDecomposition

One reactant becomes two products.

AB  →  A + BIn equation (b), this is like how NH₃ separated into two products, N₂ and H₂.

Single Displacement

Start with two reactants, a compound and an element. To form the products, the element replaces one of the elements that was in the compound.

AB + C  →  AC + BIn equation (a), this is like how Mg replaced Fe. Fe was part of a compound at first. Now, Mg is part of a compound instead.Double Displacement

Start with two reactants that are compounds. To form the products, an element from each compound replaces each other.

AB + CD  →  AC + BD

Therefore, equation (a) is a single displacement reaction and equation (b) is a decomposition reaction.

*Each letter represents an element. Two elements make a compound. A letter can also represent a compound if compound stays together during the reaction.

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the reaction between strontium hydroxide and chloric acid produces __________.

Answers

The reaction between strontium hydroxide and hydrochloric acid produces strontium chloride and water.

(Question) How many atoms are in 3 grams of Cu?
(20 points)

Answers

Answer: 2.85 x 10^22

Explanation:

We can use stoichiometry to convert grams to atoms.

*Important quantities*

Original amount of Copper: 3 grams

Molar mass of Copper: 63.5 grams

Avogadro's number: 6.022x10^23 atoms/formula units/molecules

Process - [tex]\frac{3gramCu}{1}[/tex]×[tex]\frac{1 mole Cu}{63.5 gCu}[/tex]×[tex]\frac{6.022x10x^{23} }{1 moleCu}[/tex] = 2.84503937×10^22

After taking sig figs into account, the answer needs to be rounded to 3 decimal places

Final answer: 2.85 x 10^22

Chemical Reactions - Problems
4 NH, +5 O, → 4 NO+6H_O
Which of the following are the reactants in the reaction above?
NH,
NO
I
H₂O
Submit v
IT

Answers

Reactants are on the left side of the equation and the products are on the right side. Given that information, NH and 5O are the reactants.

What is the molarity of a solution in which 0.23 moles of NaCl are dissolved in enough water to make 395.6 mL of solution

Answers

The molarity of NaCl in enough water is 0.582[tex]\frac{mol}{mL}[/tex]

The moles of NaCl is given which is 0.23 and NaCl is dissolved in enough water which makes the solution of 395.6 mL.

The total number of moles of solute present in a given solution per litre is known as its molarity. In contrast to mass, which varies as the system's physical circumstances vary, the volume of a solution changes as a function of changes in the system's physical qualities, such as pressure and temperature. This has an impact on the molality of the solution. The symbol M, sometimes known as a molar, denotes molarity. A solution is considered to be one molar when one gram of the solute dissolves in one litre of the solution.

So, the molarity= [tex]\frac{totalnumber of moles}{total volume }[/tex]

molarity=[tex]\frac{0.23}{0.395}[/tex]

molarity=0.582[tex]\frac{mol}{mL}[/tex]

Hence, the molarity is 0.582.

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Which of the following is a physical property of minerals?

Answers

Answer:

Below

Explanation:

You didn't list any choices but stuff life color, density, texture,hardness, luster are PHYSICAL properties

This is the wrong answer ignore this

I’ve tried to do the problem but it’s confusing

Answers

Answer:

Explanation:

The equation for calculating the amount of heat released is:

q = mcΔT

where:

q = heat released (in joules)

m = mass of the substance (in grams)

c = specific heat capacity (in J/g·°C)

ΔT = change in temperature (in degrees Celsius)

Given:

m = 30 g

ΔT = 96°C - 25°C = 71°C

c = 4.184 J/g·°C (for water)

so

q = (30 g)(4.184 J/g·°C)(71°C) = 8.91*71 = 635.11 J

Therefore, 635.11 J of heat is released when 30g of water cools down from 96 degree celsius to 25 degree celsius

Note that this calculation is valid only if the process is adiabatic or no heat is exchanged with the environment.

What are the chances of the offspring being heterozygous for tall plant?

Answers

There are 50% chances of the offspring being heterozygous for tall plant.

Crossing homozygous short tt plants with heterozygous tall Tt plants yields short to tall plants in a 1:1 ratio. So the seed has a 50% chance of growing into a large plant.

Under such conditions, the dominant allele is always expressed and the recessive allele is masked. In this example, the size allele is dominant, so the plant grows.

About 80% of an individual's height is determined by differences in their inherited DNA sequences.

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What is the mass of 2.30 x 10^24 particles of water, H₂O?

Answers

The mass of 2.30 x 10²⁴ particles of water (H₂O) is 60.84 grams.

What exactly is mass defined as?

The amount of matter in a particle or object is represented by its mass, which is denoted by the symbol m. In the International System (SI), the kilograms serves as the default unit of mass (kg).

The formula N = n L describes the relationship between a substance's number of particles and number of moles.

n also defined using the equation n = m/M

N = n L

N = m/M L

Then substitute N and L values,

2.30×10²⁴ = m/M × 6.02×10²³

Molar mass of water = 18

2.30×10²⁴ = m/18  × 6.02×10²³

2.30×10²⁴/6.02×10²³ = m/18

3.38 = m/18

m = 3.38 × 18

m = 60.84grams.

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6.0 mol Al reacts with 4.0 mol O2 to form Al2O3.
4A1+30₂ → 2Al₂O3
How many moles of Al2O3 form when 4.0 mol Al reacts?

Answers

2 moles of Al₂O₃ will be produced when 4 moles of Al reacts in accordance with the above equation.

How to calculate moles using stoichiometry?

Stoichiometry refers to the study and calculation of quantitative (measurable) relationships of the reactants and products in chemical reactions (chemical equations).

According to this question, 6.0 moles of Al reacts with 4.0 mol of oxygen gas to form Al₂O₃ as follows:

4Al + 30₂ → 2Al₂O₃

Based on the above equation, 4 moles of Al reacts to form 2 moles of aluminium oxide.

This means that 4 moles of aluminium will produce 4 × ²/4 = 2 moles of aluminium oxide.

Therefore, 2 moles of Al₂O₃ will be produced by 4 moles of aluminium.

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I need help plssss:(

the question is in the photo

Answers

The balanced chemical equation for the combustion of methane is:

CH4(g) + 2 O2(g) -> CO2(g) + 2 H2O(l)

The standard enthalpy of formation (ΔHf) for methane is -74.8 kJ/mol, for carbon dioxide it is -393.5 kJ/mol, and for water it is -285.8 kJ/mol. The standard enthalpy of formation is the change in enthalpy when one mole of a compound is formed from its elements in their standard states.

To calculate the standard enthalpy of reaction (ΔHrxn), we need to use the equation:

ΔHrxn = ΣΔHf (products) - ΣΔHf (reactants)

Plugging in the values for the reactants and products, we get:

ΔHrxn = (2 * -285.8 kJ/mol) + (-393.5 kJ/mol) - (-74.8 kJ/mol)

ΔHrxn = -890.2 kJ/mol

This reaction is exothermic because the value of ΔHrxn is negative. Exothermic reactions release heat, while endothermic reactions absorb heat.

Choose correct reagent(s) for the conversion below q2 A. a) propyl bromide / AlCl3 b) NBS B. a) propyl bromide / AlCl3 b) Br2 / heat or light C. a) propanoyl chloride with (1) AlCl3 and (2) H2O b) NBS D. a) propanoyl chloride with (1) AlCl3 and (2) H2O b) Br2 / heat or light E. a) Br2 / FeBr3 b) (propyl)2CuLi c) Br2 / light or heat

Answers

D. a) propanoyl chloride with (1) AlCl3 and (2) H2O b) Br2 / heat or light.

What is a reagent?

A reagent is a substance that is used in a chemical reaction to detect, measure, examine, or produce other substances. Reagents are used in many different industries, including pharmaceuticals, environmental testing, and materials science. Reagents can be in the form of a solid, liquid, or gas, and are generally made from a combination of elements, compounds, or mixtures.

a) The reaction of propanoyl chloride with AlCl3 and H2O can be represented as follows:

AlCl3 + H2O + Propanoyl Chloride → Al(OH)3 + HCl + Propanoic Acid

This reaction involves substitution of the chlorine atom in the propanoyl chloride molecule with a hydroxide ion from the AlCl3/H2O mixture.

b) Br2 / heat or light cannot be used to react with propanoyl chloride, as this reaction would require the breaking of the carbon-chlorine bond. This is not possible using Br2 / heat or light.

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Identify the 13 c nmr chemical shift for each carbon atom in a molecule of 1-penten-3-one

Answers

Carbon 1: δ = 2.09 ppm (The C1 atom is a methyl group, and is in a tertiary environment, which typically corresponds to a chemical shift of around 2.09 ppm).

What is chemical shift?

Chemical shift is a term used in NMR spectroscopy to describe the relative difference in the resonance frequency of a nucleus in a molecule compared to a reference frequency.

2. Carbon 2: δ = 11.81 ppm (This is the carbonyl carbon, and is in a sp2 hybridized environment, which typically corresponds to a chemical shift of around 11.81 ppm).
3. Carbon 3: δ = 13.92 ppm (This is the terminal carbon of the pentene chain, and is in a sp3 hybridized environment, which typically corresponds to a chemical shift of around 13.92 ppm).
4. Carbon 4: δ = 16.53 ppm (The C4 atom is a methylene group, and is in a secondary environment, which typically corresponds to a chemical shift of around 16.53 ppm).
5. Carbon 5: δ = 17.86 ppm (The C5 atom is a quaternary carbon, and is in a sp3 hybridized environment, which typically corresponds to a chemical shift of around 17.86 ppm).

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Why do halogens get less reactive?

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The halogens gets less reactive as we move down the group because the atomic mass will increases and the number of the electrons are increases.

The halogens get less reactive as we move top to bottom in the group in the periodic table as the atomic mass of the group 17 elements that is halogens will increases and as we move from  from top to bottom in the periodic table the electrons are added and the number of electrons are increases.

This is reason , that the reactivity of the group 17 elements that is halogens will decreases as we move from top to bottom.

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75g of a potato chip are burned in a calorimeter that contains 2L of water initially at 297K. After the combustion, the temperature rises 12oC. How much heat is involved per gram of potato chip burned

Answers

The amount of heat involved per gram of potato chip burned is 8388J when a 75g of a potato chip are burned in a calorimeter that contains 2L of water initially at 297K.

Given mass of potato chips burned = 75g

Mass of water (m) = 2L = 2000g

Initial temperature (T1) = 297K - 273 = 24oC.

Final temperature after combustion (T2) = 12oC

We know that q = mC∆T where q is heat and C is specific heat of water =  4.2J/g/oC.

q = 2000 x 4.2 x (24-12)

q = 8388J

Hence the heat evolved per gram of potato chip burned is 8388J

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. The reaction rates of many spontaneous reactions are actually very slow. Which of these statements is the best explanation for this observation? (1) The activation energy of the reaction is large. (2) AG for the reaction is positive. (3) Such reactions are endothermic. (4) The entropy change is negative.

Answers

In reality, spontaneous reactions occur relatively slowly because The reaction's activation energy is high.

Hence, Option 1 is correct.

A spontaneous reaction is one that favors the creation of products in the environment in which it is taking place.Given that spontaneous reactions discharge free energy, the sign of G must be negative. There are four distinct conceivable combinations because both H and S can be either positive or negative depending on the features of the specific reaction.An exothermic example of a spontaneous reaction is a raging campfire (there is a decrease in the energy of the system as energy is released to the surroundings as heat).

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What causes stress in rocks? and What happens when stress is released?

Answers

When plates are pushed or pulled, the rock is subjected to stress. Stress can cause a rock to change shape or to break

Calculate each of the following quantities:
A. Volume (ml) of 2.25 M potassium hydroxide that contains 15.0 g of solute enter a 3 significant figure number
B. molarity of 250. ml of solution containing 1.25 moles of glucose
C. volume (ml) of 10.00 M copper(II) nitrate that must be diluted with water to prepare 750.0 ml of a 2.500 M solution (enter to 4 significant figures)
D. Are the following instructions for diluting a 10.0 M solution to a 1.00 M solution correct: "Take 100.0 mL of the 10.0 M solution and add 900.0 mL water"? enter either true or false

Answers

(A) Vol. of solvent is 119.8 ml, (B) Molarity (M) of sol. is 5.00 M, (C) V1 of copper nitrate solution is 187.5 ml, (D) The instruction given is false.  

(A). To calculate the volume (ml) of a 2.25 M potassium hydroxide solution that contains 15.0 g of solute, we can use the formula:

The unit of measurement for molarity (M) is moles of solute per liter of solvent.

Rearranging the formula to solve for liters of solvent:

Molecularity = moles of solute / liters of solvent (M)

We know that the molar mass of potassium hydroxide (KOH) is 56.1 g/mol. To find the moles of solute, we can divide the given mass (15.0 g) by the molar mass of KOH:

15.0 g / 56.1 g/mol = 0.2679 moles

Now we can plug this value into the formula above:

Liters of solvent = 0.2679 moles / 2.25 M

Liters of solvent = 0.1198 L or 119.8 ml (rounded to 3 significant figures)

(B). To calculate the molarity of a solution containing 1.25 moles of glucose in 250. ml of solvent, we can use the formula:

The unit of measurement for molarity (M) is moles of solute per liter of solvent.

Plugging in the given values:

Molarity (M) = 1.25 moles / 0.250 L

Molarity (M) = 5.00 M

(C). To calculate the volume of a 10.00 M copper(II) nitrate solution that must be added to water to prepare 750.0 ml of a 2.500 M solution, we can use the formula:

M1V1 = M2V2

Where M1 and V1 are the concentration and volume of the original solution, and M2 and V2 are the concentration and volume of the final solution.

We know that the final solution has a volume of 750.0 ml and a concentration of 2.500 M, so we can plug in these values for V2 and M2:

M1V1 = 2.500 M x 750.0 ml

Now we can solve for V1 (the original volume) by rearranging the formula:

V1 = M2V2 / M1

V1 = (2.500 M x 750.0 ml) / 10.00 M

V1 = 187.5 ml (rounded to 4 significant figures)

(D). The instructions "Take 100.0 mL of the 10.0 M solution and add 900.0 mL water" are not correct for diluting a 10.0 M solution to a 1.00 M solution.

To achieve this dilution, you would need to take a smaller volume of the 10.0 M solution and add a larger volume of water, because the final volume should be larger than the starting volume.

For example, you could take 10.0 mL of the 10.0 M solution and add 90.0 mL of water, which would give you a final volume of 100.0 mL and a concentration of 1.00 M. The instruction given above is false.

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Nitric acid has the formula HNO3. If there are 3. 55x10^23 atoms of O in the sample, how many moles of nitric acid are there?​

Answers

Nitric acid has the formula HNO₃. If there are 3. 55x10²³ atoms of O in the sample, the number of moles of nitric acid is 0.589moles.

Define mole.

How many moles of a substance are present in a reaction is determined by comparing its mass to the mass of one mole. One mole, or Avogadro's number, is equal to the sample mass divided by the molar mass, or 6.023×10²³ moles. You can calculate the total number of atoms or molecules in a sample by dividing the number of moles by the Avogadro constant. The equation is: Number of Molecules=Atoms or Molecules /6.022×10²³.

1 mole oxygen atom contains 6.02×10²³ atoms

how many moles of oxygen contains 3.55x 10²³atoms

Moles of nitric acid = 3.55x 10²³atoms/6.02 ×10²³atoms

Moles of nitric acid = 0.589moles.

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Suppose you run this reaction in a solvent that dissolves elemental mercury and elemental oxygen. What is the equilibrium-constant expression in terms of molarities for the reaction, using (solv) to indicate solvation.

Answers

At 55 °C, the equilibrium constant for this reaction is 6.68. A pharmaceutical chemist prepares 15.0 L of an initial 0.275 M acetic acid and 3.85 M ethanol solution.

Create an equation that can be solved for x by plugging the equilibrium concentrations (expressed in terms of x) into the formula for the equilibrium constant. (d) The equation from subpart (c) is cubic (it bears the formula ax3 + bx2 + cx + d = 0). In general, it is impossible to solve cubic equations in closed form. Indicate the direction (toward product or toward reactants) in which the mixture must change if it is not at equilibrium. The concentrations of SO 2 Cl 2 and SO 2 are 0.108 M and 0.052 M, respectively, in a mixture of the three gases that has reached equilibrium.

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The molar mass of CCl4 is 153. 81 g/mol How many grams of CCl4 are needed to have 5. 000 mol?​

Answers

The molar mass of CCl4 is 153. 81 g/mol. '769.0 g' of CCl4 are needed to have 5.000 mol.

What is molar mass?

Molar mass is the mass of one mole of a substance. It is usually expressed in grams per mole (g/mol). The molar mass of a substance is calculated by taking the sum of the atomic weights of all of the atoms in the molecule multiplied by the Avogadro constant (6.022x10^23).

To find the number of grams of CCl4 needed to have 5.000 mol, use the formula:

Mass (grams) = Molar mass (g/mol) x Number of moles

Mass (grams) = 153.81 g/mol x 5.000 mol

Mass (grams) = 769.0 g.

'769.0 g' of CCl4 are needed to have 5.000 mol.

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2 points of the water molecule are the paired ______ and _______ electrons from the oxygen atom and ________ electron from each H atom
The other 2 points of the water molecule are the paired _________ electrons of the oxygen atom.

I get what the question is asking and I know general idea of the answer. I just can't for the life of me figure out what exact wording I am supposed to use that will fit these blanks

Answers

To solve this we must be knowing each and every concept related to chemical Compound. Therefore, The other 2 points of the water  molecule are the paired two electrons from the oxygen atom and one electron from each H atom.

What is chemical Compound?

Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.

There are two types of chemical compound one is covalent compound and other is ionic compound, covalent compound formed by sharing of electron and ionic compound formed by complete transfer of electron. The other 2 points of the water  molecule are the paired two electrons from the oxygen atom and one electron from each H atom.

Therefore, The other 2 points of the water  molecule are the paired two electrons from the oxygen atom and one electron from each H atom.

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Convert: 9.94 × 10²² molecules NH3 = ___ mol NH3

5.99 x 10⁴⁶
none of these
2.81
6.06
0.165​

Answers

Answer:

correct answer is 0.165 moles by calculation

2 H2 + O2 --> 2 H2O

What mass of water (H2O) will be collected if 20. 0 grams of hydrogen gas (H2) are consumed?

Select one:


179 grams


89. 4 grams


44. 7 grams


358 grams

Answers

Answer:

2H2 +O2 - 2H20

4g of H react to give 36g of H20

20g of H gives Xg of H20

cross multiply

4x= 36*20

4x= 720

Xg = 720/4

Xg= 180g approximately

That is A which is 179

An ideal ga (which i i a hypothetical ga that conform to the law governing ga behavior) confined to a container with a male piton at the top. (Figure 2) A male wire i attached to the piton. When an external preure of 2. 00 atm i applied to the wire, the ga compree from 6. 40 to 3. 20 L. When the external preure i increaed to 2. 50 atm , the ga further compree from 3. 20 to 2. 56 L. In a eparate experiment with the ame initial condition, a preure of 2. 50 atm wa applied to the ideal ga, decreaing it volume from 6. 40 to 2. 56 L in one tep. If the final temperature wa the ame for both procee, what i the difference between q for the two-tep proce and q for the one-tep proce in joule?

Answers

An ideal gas is a gas composed of a large number of identical molecules that obey the ideal gas law.

What do you mean by Gas?

Gas is a state of matter made of atoms and molecules that are not bound together, allowing them to move freely and take the shape and volume of their container. It is one of the four fundamental states of matter (the others being solid, liquid, and plasma).

The heat exchanged in a two-step process is given by

q = CpΔT + (P1V1 – P2V2)

where Cp is the specific heat capacity of the gas, ΔT is the change in temperature, P1 and V1 are the initial pressure and volume, and P2 and V2 are the final pressure and volume.

For the two-step process,

q = CpΔT + (2.00 atm x 6.40 L – 2.50 atm x 3.20 L)

For the one-step process,

q = CpΔT + (2.50 atm x 6.40 L – 2.50 atm x 2.56 L)

The difference in q for the two-step process and the one-step process is

q2 – q1 = (2.50 atm x 3.20 L – 2.00 atm x 6.40 L)

q2 – q1 = (7.68 L atm – 12.80 L atm)

q2 – q1 = -5.12 L atm

Since 1 L atm = 101.3 J, the difference in q for the two-step process and the one-step process is

q2 – q1 = -5.12 L atm x 101.3 J/L atm

q2 – q1 = -517.4 J.

Hence, the difference is -517.4 J.

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Help me please I have been stuck for some time

Answers

Answer:275.4 g Al2O3

Explanation: The mass of Al2O3 formed is 2.7 mol * 102 g/mol = 275.4 g. This is because the molar mass of Al2O3 is 102 g/mol. This means that when 1 mol of Al2O3 is formed, it has a mass of 102 g. Therefore, when 2.7 mol of Al2O3 is formed, it has a mass of 2.7 mol * 102 g/mol = 275.4 g.

16% of m is 28
16% x m = 28
0.16 x m = 28
m = ...

Answers

Answer:

m=175

Explanation:

100/16 = 6.25

6.25x28 = 175

Answer: To solve this equation for m, you can divide both sides of the equation by 0.16. This will give you:

m = 28 / 0.16

Simplifying the right side of the equation gives:

m = 175

Therefore, m = 175.

Explanation:

Iron has a BCC crystal structure, an atomic radius of 0. 124 nm, and an atomic weight of 55. 85 g/mol. Compute its theoretical density

Answers

Iron has a BCC crystal structure, an atomic radius of 0. 124 nm, and an atomic weight of 55. 85 g/mol. its theoretical density is 7.9 g /cm³.

The molar mass of the iron = 55.85 g/mol

The atomic radius = 0.124 nm

the edge length is given as :

a = (4r) / √3

a = ( 4 × 0.124 × 10⁻⁷ cm ) / √3

a = 2.86 × 10⁻⁸ cm

The density is given below :

density = ( Z × M ) / Na × a³

density = ( 2 × 55.85 ) / (6.023 ×10²³) × ( 2.86 × 10⁻⁸ )

density = 7.9 g/cm³

Thus the theoretical density is 7.9 g/cm³.

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please i really need help! anything will help at the moment On 4 January 2020 Thabo deposited P7 800 into savings account. The simple interest rate agreed upon was 6.2% per annum. What will be accumulated amount in the savings account on 21 November 2020? (Assume a year has 365 days). What is the wealth gap right now? Drawing from your culture lessons and at least one Spanish language resource, write a one paragraph summary report on a significant event, movement, or historical figure from either Peru, Costa Rica, Bolivia, or Argentina. You may search the internet for articles, newspapers, books, other media, use books from the library, or any other Spanish language source you choose. In your summary report you should also discuss what you learned or realized from your research. Also, be sure to cite your Spanish sources of information.Your response must contain at least 5 detailed and complete sentences in Spanish. You will be graded on (a) appropriate use of grammar and vocabulary, (b) completeness and detail of the response, and (c) overall quality of the response. Calculate the mass of metal oxide produced during the decomposition of 1280 g of 77.5% pure magnesium carbonate! David drives from his home to the airport to catch a flight. He drives 35 miles in the first hour,but realizes that he will be 1 hour late if he continues at this speed. He increases his speed by 15miles per hour for the rest of the way to the airport and arrives 30 minutes early. How many milesis the airport from his home?(A) 140 (B) 175 (C) 210 (D) 245 (E) 280 How does Stevenson create an eerie atmosphere in chapter 1? Somebody please help me with these 5 questions!!! This is worth 25 points please help!!1. Consider your experiences listening to and reading Flyest Fables by Morgan Givens. In what ways did listening help you understand the characters, plot, or setting? What did you notice when listening that you did not notice when reading?2. In what ways did reading Flyest Fables help you understand the story? In what ways did reading, rather than listening, help you understand the characters, plot, or setting? What did you notice this time?3. Think about the genres of Flyest Fables by Morgan Givens and "Seventh Grade" by Gary Soto (or another story you've read recently). What is the genre of each text? How are the stories similar in terms of genre? Use details from the stories in your answer.4. Now describe the differences between Flyest Fables and "Seventh Grade" (or another story you've read recently) in terms of genre. Support your answer with details from each story.5. Think about the characters of Antoine from Flyest Fables and Victor from "Seventh Grade." In what ways are the characters similar and different? If you're comparing Flyest Fables to a different story, discuss the main character of that story a total of 10.0j of work is done in accelerating a 20-n object from rest across a horizontal frictionless table. what is the total kinetic energy gained by the object Question 5 of 13The citizen of the United States is taught from infancy torely upon his own exertions in order to resist the evils andthe difficulties of life; he looks upon the social authoritywith an eye of mistrust and anxiety, and he claims itsassistance only when he is unable to do without it. Thishabit may be traced even in the schools, where the childrenin their games are wont to submit to rules which they havethemselves established, and to punish misdemeanorswhich they have themselves defined. The same spiritpervades every act of social life.-Alexis de Tocqueville, Democracy in AmericaThis excerpt most clearly relates to which central theme?A. PopulismB. IndividualismC. Laissez-faireD. Egalitarianism What is one of the attributes of the Getta Byte Software - New Billing System project?Hint: Review your textbooks and the Getta Byte SoftwareCreating a Charter section in the Week Solid silicon and solid magnesium chloride form when silicon tetrachloride gas reacts with magnesium metal. Write a word equation and an unbalanced formula equation including physical states. Which would be eaier to carry --- a chool bag with a broad trap for a chool bag with a very thin trap? Jutify your anwer In addition to the transition from desert to tropical climate, what else coincides with the African Transition Zone Forces acting upon a 100-kg crate sliding down an inclined plane, the plane is inclined at an angle of 30 The coefficient of friction between the crate and the incline is 0.3. Determine the net force of the crate. Use: g=10m/s, Sin30=0.5, and Cos30=0.9 A) 300N B) 200N C) 100N D)230N Which of the following may cause a favorable sales volume variance of the revenues? O Actual sales in dollars are greater than the master budget sales in dollars. O The flexible budget sales in dollars are greater than the static budget sales in dollars. O Actual sales in dollars are less than the static budget sales in dollars. O Actual net income for the subunit is greater than budgeted net income. The figure was created by repeatedly reflecting triangle NMP.A figure is created by continuously reflecting triangle N M P. The length of side N M is 6 inches, the length of side M P is 4 inches, and the length of side N P is 8 inches.The scale factor of the dilation of segment HG is One-sixth.Point P is the center of dilation. Line segment H G is dilated to form shorter line segment H prime G prime. The length of P G prime is 0.5 If PG' equals 0.5 units, what is PG?2.5 units3 units4.5 units6 units Flying against the wind, an airplane travels 4720 kilometers in 8 hours. Flying with the wind, the same plane travels 4040 kilometers in 4 hours. What is the rate of the plane in still air and what is the rate of the wind? What was the purpose of the internment camps ? Is the vertex of -x^2q-2x+10=0 parabola a maximum value or minimum value?