1.42 × [tex]10^{-1}[/tex] mol would take 14.79 min to effuse.
How long would it take to effuse?
Mathematically,
Rate of effusion = [tex]\sqrt{1/M}[/tex] ; M= Molar mass
For comparative study between two subjects, we can write:
[tex]r_{2} / r_{1}[/tex]= [tex]\sqrt{m1/m2}[/tex]
In this case, Ne be gas 1 and Xe be gas 2,
∴ r(Xe) = r(Ne)[tex]\sqrt{20.1797/131.293}[/tex]
r(Xe) = 9.60×10[tex]^{-3}[/tex]mol/min
Thus, for Xe 9.60×10[tex]^{-3}[/tex] mol effuses in 1 minute,
1.42 × [tex]10^{-1}[/tex] would effuse in 1.42 × [tex]10^{-1}[/tex] /9.60×10[tex]^{-3}[/tex] = 14.79 min
Thus, 1.42 × [tex]10^{-1}[/tex] mol would take 14.79 min to effuse.
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Place a charcoal briquette into a plastic sandwich bag. Lightly hammer the bag enough to break apart the briquette, taking care not to damage the surface that the bagged briquette is on. 1. Examine the broken pieces of charcoal with a hand lens. Describe what kinds of grains you see and their texture. 2. Charcoal is made by allowing wood to smolder just enough that an impure mass of carbon remains. In the presence of oxygen, the charcoal briquette will naturally combine with oxygen to make carbon dioxide. Over a period of many years, it will all react with oxygen and chemically weather to carbon dioxide. When you burn charcoal in your grill, you are simply speeding up the process. However, if plant fragments (peat) are buried beneath layers of sediment that keep oxygen away from them, then they can slowly convert to a charcoal-like material called coal, which is stable for millions of years. Obtain a piece of coal and compare it to your charcoal. How is it different
When looking at the broken pieces of charcoal with a hand lens, you will see small pieces of black matter with a rough texture.
What is charcoal?Charcoal is a combustible, black solid fuel made from partially burned wood, bone, or other organic matter. It is primarily used as a fuel for barbecues, grills, and other cooking methods, and is also used in art and blacksmithing. Charcoal is created by burning wood or other organic material in a limited amount of oxygen, reducing it to a carbon-rich substance. The material is then heated to high temperatures to burn off volatile compounds, leaving behind a black, porous material that is rich in carbon. Charcoal is more efficient than wood as a fuel source because it has a higher energy content and produces fewer pollutants.
The pieces of charcoal are made up of small grains of carbon that were formed when the wood was burned. The texture of the charcoal varies from coarse to fine, depending on the type of wood used in the burning process.
When compared to a piece of coal, the charcoal pieces are much smaller and the texture is more rough. Coal forms when plant materials are buried beneath layers of sediment, which prevents oxygen from reaching them. Over a period of millions of years, these plant materials slowly convert to a charcoal-like material called coal. The coal has a much smoother texture than the charcoal and is made up of larger, more compact pieces of carbon.
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the mineral energite is 48.41% cu, 19.02% as and 32.57% s by mazz. what is the emperical orumal of enargite
The above assertion claims that the emperical formula for enargite is Cu3AsS4.
Describe the empirical formula.The simple whole number proportion of atoms in a compound is the empirical formulae of a chemical in chemistry. No information on the arrangement or quantity of atoms is provided in an empirical formula.
Briefing :If we use 100 grams of enargite:
n(Cu) = 48,41 g ÷ 63.55 g/mol.
n(Cu) = 0.761 mol.
n(As) = 19.02 g ÷ 74.92 g/mol.
n(As) = 0.254 mol.
n(S) = 32.57 g ÷ 32.065 g/mol.
n(S) = 1.016 mol.
n(Cu) : n(As) : n(S) = 0.761 mol : 0.254 mol : 1.016 mol / 0.254.
n(Cu) : n(As) : n(S) = 3 mol : 1 mol : 4 mol.
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The four fundamental forces are arranged in the increasing order of their relative strength.
(A, B and C represent three of the fundamental forces.)
A < B < electromagnetism < C
Which statement is true about the fundamental forces represented by B and C?
Both have short range.
Both have infinite range.
Both act only between charged particles.
Both act only between non-atomic particles.
What is common about the forces B and C is that both have short range.. Option A
What are the fundamental forces?We know that the fundamental forces are known to be the forces that are able to operate in the universe. These are the four forces that are able to hold the universe in place as we can see the universe today.
The arrangement of these four fundamental forces in the increasing order of their relative strength is;
gravity weak nuclear force electromagnetic forcestrong nuclear forceHaving looked at these forces it is clear that the order of the increase of the strengths of the forces is from top to the bottom of the list a shown above here.
Thus the B and C talk about the weak and the strong nuclear forces and these are both short range forces as we know above.
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Solid sodium reacts with liquid water to form hydrogen gas according to the equation
2 Na(s) + 2 H₂O(l) → 2 NaOH(aq) + H₂(g)
What is the pressure (in atm) of hydrogen gas in the 20.0 L headspace of a reactor vessel when 3.36 kg sodium is reacted with excess water at 50.0 °C?
The pressure (in atm) of hydrogen gas in the 20.0 L headspace of a reactor vessel when 3.36 kg sodium is reacted with excess water at 50.0 °C can be calculated using the ideal gas law, which states that the pressure, volume, and temperature of a gas are related by the equation PV = nRT, where P is the pressure of the gas, V is the volume of the gas, n is the number of moles of gas, R is the ideal gas constant, and T is the temperature of the gas in Kelvin.
To calculate the pressure of the hydrogen gas, we first need to determine the number of moles of hydrogen gas produced by the reaction. We can do this by using the balanced chemical equation for the reaction, which is 2 Na(s) + 2 H₂O(l) → 2 NaOH(aq) + H₂(g).
From the balanced chemical equation, we can see that for every 2 moles of sodium that react, 1 mole of hydrogen gas is produced. Therefore, if 3.36 kg of sodium is reacted with excess water, the number of moles of hydrogen gas produced is 3.36 kg / (22.99 g/mol) = 146.4 moles.
Next, we need to convert the temperature of the gas from degrees Celsius to Kelvin. This can be done by adding 273.15 to the temperature in Celsius, which gives us a temperature of 50.0 + 273.15 = 323.15 K.
Now that we have the number of moles of hydrogen gas and the temperature of the gas, we can plug these values into the ideal gas law equation to calculate the pressure of the hydrogen gas:
P = (nRT) / V
P = (146.4 mol * 0.08206 L*atm / mol*K * 323.15 K) / 20.0 L
P = 4.31 atm
Therefore, the pressure (in atm) of hydrogen gas in the 20.0 L headspace of a reactor vessel when 3.36 kg sodium is reacted with excess water at 50.0 °C is 4.31 atm.
How many Calories are in a
candy bar containing 919,600 J
of energy?
Specific heat capacity of a substance is the amount of heat required to raise the temperature by one degree Celsius of one gram of a substance. Therefore, 2,19,789.6calorie are in a candy bar containing 919,600 J of energy.
What is Enthalpy?Enthalpy term is basically used in thermodynamics to show the overall energy that a matter have. Mathematically, Enthalpy is directly proportional to specific heat capacity of a substances.
Mathematically,
1 calorie= 4.184Joule
1 joule = (1/ 4.184)calorie
919,600 J will have energy
919,600× (1/ 4.184)
=919,600/4.184
=2,19,789.6calorie
Therefore, 2,19,789.6calorie are in a candy bar containing 919,600 J of energy.
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Answer:219.8
Explanation:
What particle is emitted (known as an alpha particle)
Answer:
Alpha particles are contains of two neutrons and two protons.
Answer:
Alpha particles are subatomic fragments consisting of two neutrons and two protons. Alpha radiation occurs when the nucleus of an atom becomes unstable (the ratio of neutrons to protons is too low) and alpha particles are emitted to restore balance.
What is the most important reason for using hydrates in fire extinguishers?
-They keep fire extinguishers dry during shipping and storage.
-They make fire extinguishers more affordable for household use.
-They create foams that have high water content to help extinguish fires.
-They create high pressure in the cylinder to quickly force out the fire r*tardant.
The importance of the use of hydrates in fire extinguishers are;
-They keep fire extinguishers dry during shipping and storage.
-They create foams that have high water content to help extinguish fires.
They create high pressure in the cylinder to quickly force out the fire r*tardant.
What is a fire extinguisher?We know that a fire extinguisher has to do with any device that has been made in such a way that the device can be used to eliminate a flame that is burning. We all know that fore can be very destructive. This implies that it is important to be able to put out the fire so that it does not cause big problems.
The fire extinguisher is composed of certain chemical substances that are able to react together quickly and then be able to quench the flame of the reaction that is going on in the system.
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A colorimeter is an instrument used to measure the amount of Choose... absorbed by a solution. This absorbance is proportional to the Choose... of the solute in soli Theat light sound absorbed by a solution. This absorbance is A colorimeter is an instrument used to measure the amount of Choose... - proportional to the Choose... of the solute in solution. concentration purity molecular weight
A colorimeter is a device used to gauge how much heat a solution has absorbed. The concentration of the solute in the solution is inversely correlated with this absorbance.
What is a calorimeter?
A calorimeter is a tool used in calorimetry, a technique for calculating heat capacity and measuring the heat of chemical processes or other physical changes. Among the most popular kinds are differential scanning calorimeters, isothermal micro calorimeters, titration calorimeters, and accelerated rate calorimeters.
One at a time, two chemicals A and B are placed in a calorimeter, and the temperatures before and after the reaction are recorded. The enthalpy change per mole of substance A in the process is calculated using these data. The mass and specific heat capacity of the components can be multiplied by the temperature change to provide an estimate of the amount of energy produced or absorbed during the reaction. The enthalpy change of the reaction is calculated by dividing the energy change by the quantity of A that was present.
One at a time, two chemicals A and B are placed in a calorimeter, and the temperatures before and after the reaction are recorded. The enthalpy change per mole of substance A in the process is calculated using these data. The mass and specific heat capacity of the components can be multiplied by the temperature change to provide an estimate of the amount of energy produced or absorbed during the reaction. The enthalpy change of the reaction is calculated by dividing the energy change by the quantity of A that was present.
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How much heat is required to change 48. 5 liquid mercury (Hg) at 400 K to vapor at a 700 K? The boiling point of mercury is 629. 88 K
-88 kj
-204 kj
16. 2 kj
30 kj
29 kj
16.2 kJ heat is required to change 48.5 liquid (Hg) at 400 K to vapor at a 700 K.The quantity of heat required to raise the temperature of a substance by one degree Celsius is known as the specific heat capacity.
How to solve?Q = m * cl * ( T f - T i ) + mL + m * cv *T (f) - T (i)
Q = Heat absorbed = ?
m= mass of mercury (Hg)= 48.5 g = 0.0485 kg
c = specific heat capacity = 14.31kj/kgK
L = Latent heat of vaporization = 59.2 kJ
Initial temperature of liquid mercury = T i = 400 K
Final temperature of mercury vapor = T f = 700 K
Putting in the values, we get:
Q=1.56+14.31+0.34
Q=16.2kJ
How is vapor pressure determined at various temperatures?Result for an image mercury's vapor pressure at various temperatures. Use the Clausius-Clapeyron equation to determine the vapor pressure at a specific temperature: ln(P1/P2) = (Hvap/R)((1/T2) - (1/T1)
What degree of heat does mercury evaporate at?The only metal that is liquid at ambient temperature is mercury. When it is over its freezing point, it melts and evaporates like all liquids do. Since mercury has a freezing point of only 37.6°F, it is constantly evaporating.
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NEED HELP AS SOON AS POSSIBLE please
0.08 gram mass of magnesium oxide will be formed.
What is mass?Mass is an intrinsic property in the mass of a body. It was the traditionally believed to the be related to the quantity of matters in the physical body, until it is discovery of the atom and particle in physics.
Mass is quantitative measure of inertia a fundamental quantity of all matters.
2Mg + O 2→2MgO
Molar mass of Mg =24 g
Molar mass of MgO =40 g
No. of moles of O2=6.022×10^20/6.022×10^23
=0.001 mole of O2
No. of moles of Mg=0.486/24
=0.02 moles of Mg
As moles of O 2
are less than 0.01, O 2
is limiting reagent and it is 0.002 moles of MgO is formed.
⇒0.002×40=0.08 g of MgO
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Suppose that you use 3.71 g of Iron in the chemical reaction: 2Fe(s) + 3Cu2+(aq) rightwards arrow 2Fe3+(aq) + 3Cu(s). What is the theoretical yield of Cu(s), in grams?
The theoretical yield of Cu, in grams, would be 6.34 grams.
Theoretical yieldThe theoretical yield of a reaction is the yield of the reaction calculated based on the balanced equation of the reaction.
From the balanced equation of the reaction below:
[tex]2Fe(s) + 3Cu^{2+}(aq) --- > 2Fe^{3+} (aq) + 3Cu (s)[/tex]
The mole ratio of the iron that reacts and the copper that is produced is 2:3.
Recall that: mole = mass/molar mass
3.71 g of iron would be: 3.71/56 = 0.066 mol
The equivalent mole of copper that is produced would be; 3/2 x 0.066 = 0.099 mol.
Since, mass = mole x molar mass, the mass of 0.099 mol of copper would be: 0.099 x 64 = 6.34 grams
In other words, the theoretical yield of solid copper [Cu(s)] in grams is 6.34 grams.
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provide the major product of the reaction sequence. if cis/trans isomers are possible, draw only the major isomer. if enantiomers are possible, do not specify configuration.
Answer: The product of two consecutive negative integers is 600. What is the value of the lesser integer?
Explanation: EDGE2021
if a drop of carbonated water were placed on blue litmus paper, what would be the color of the litmus paper?
If a drop of carbonated water were placed on blue litmus paper, the color of the litmus paper will turn red.
Carbonated water is water that contains dissolved carbon dioxide gas, which may have been added to the water intentionally under pressure or may have occurred naturally as a result of geological processes. Carbonation creates tiny bubbles that make water effervescent. Club soda, sparkling natural water, and sparkling water created commercially are examples of soda water.
As soda water is an acidic solution, the blue litmus paper changes to a red color. This is because the carbonation process, in which CO₂ is bubbled into the water, results in the formation of carbonic acid, which then interacts with litmus paper.
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How much energy does it take to warm 1. 0 kg of ice from −40°c to 0°c? the specific heat of ice is 2090 j/kg°c.
The energy required is 83,600 j/kg°C, for the given specific heat of the ice.
What is Specific heat?
The amount of heat needed to raise a substance's temperature by one degree Celsius in one gram is also known as specific heat. Typically, calories or joules per gram per degree Celsius are used as the units of specific heat. For instance, water has a specific heat of 1 calorie (or 4.186 joules) per gram per degree Celsius.
What is Energy?
The quantitative quality that is transferred to a physical system or a body is known as energy, and it is evident in the production of heat and light as well as in the performance of work. The law of conservation of energy asserts that although energy can change its form, it cannot be created or destroyed. Energy is a conserved quantity.
What are the calculations?
The total heat required will be the sum of heat energy needed to change the temperature of ice from –40°C to 0°C.
q (total) = mc (ΔT)
= 1 × 2090 × (0 + 40)
= 2090 × 40
= 83,600 j/kg°C
Hence, the energy required is 83,600 j/kg°C, for the given specific heat of the ice.
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in double replacement reactions, why will two metals not combine with each other when products are formed?
A double replacement reaction occurs when pieces of two ionic compounds switch places to form two new compounds.
A double displacement reaction is one in which one reactant is partially replaced by another.
Following is a description of double displacement reactions:
AD = AB + BC + CD
The ions in two reactant ionic compounds are switched out for the same ions in two new product compounds during a double replacement process.
A double replacement reaction occurs when two reactants switch cations or anions to create two new products.
Other names for double replacement processes include metathesis reactions and double displacement reactions.
Precipitation, gas generation, and neutralization are examples of double replacement reactions.
So, A double replacement reaction happens when bits of two ionic compounds switch places to create two new compounds.
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Some nuclear power plants use plutonium-239, which is produced in breeder reactors. the rate-determing step is the second β- emission. how long does it take to make 3.00 kg of 239pu if the reaction is complete when the product is 91.5 % 239pu?
To make 1.00 kg of ²³⁹Pu if the reaction is complete when the product is 90% ²³⁹Pu the time period is 0.357 days.
Definition of Half life
The amount of time it takes for one-half of the radioactive isotope to decay is known as half-life of a radioactive isotope. The half-life of a specific radioactive isotope is constant and it is unaffected by conditions and also independent of the initial amount of that isotope.
Half life of ²³⁹Pu is 2.35 days
K = ln2/t₀.₅
= ln 2/ 2.35
K = 0.294956/ day
N₀ = 1 kg
Nₐ = 0.91kg
K = 1/t ln N₀/ Nₐ
t = 1/K ln(N₀/Nₐ)
t = 0.357 days
Hence, the time period is 0.357 days.
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20.03atm
4.
A sample of krypton gas occupies 75.0 mL at 0.400 atm. If the temperature remained constant, what
volume would the krypton occupy at 4.00 atm?
7.5 mL volume would the krypton occupy at 4.00 atm.
The ideal gas law's response is what?The ideal gas law (PV = nRT) connects the macroscopic characteristics of ideal gases. An ideal gas is one in which the particles are both non-repellent and non-attractive to one another (have no volume).
We can solve this part by using again the B:
[tex]p_{1} V_{1} =p_{2} V_{2}[/tex]
Where in this case we have:
[tex]p_{1} =0.400 atm[/tex] is the initial pressure
[tex]V_{1} =75ml[/tex] is the initial volume
[tex]p_{2}=4atm[/tex]is the final pressure
And solving for V2, we find the final volume:
[tex]V_{2} =0.400*75/4 =7.5[/tex]ML
ANWER IS 7.5ML.
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What type of reaction is Ca(OH)2+CaSO4+Al(OH)3
The type of chemical reaction from the problem given " Ca(OH)₂+CaSO4+Al(OH)₃ " is a redox reaction.
Why the reaction Ca(OH)₂+CaSO4+Al(OH)₃ a redox reactionIt is a redox reaction simply because it contains species which undergoes oxidation and the other species which undergoes the reduction process. It is on this premise that we say that the reaction from the task given above is an oxidation and reduction reaction.
In conclusion, we can now deduce from the explanation given above that the substance which undergoes oxidation is a reducing agent while the species which undergo reduction is an oxidizing agent.
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define bond polarity and bond energy
Explanation:
♤ ϦØЛÐ þØŁΛ尺ɪŤϤ=》Polarity refers to the physical properties of compounds such as boiling point, melting points and their solubilities. ♤ ϦØЛÐ ƐЛƐ尺ƓϤ=》Bond energy is a measure of the bond strength of a chemical bond, and is the amount of energy needed to break the atoms involved in a molecular bond into free atoms.. i hope it helps uh..!! ♥️mark me as brainliest ♥️look below for question
A sample of gallium(III) sulfite, Gaz(SO3)3, contains 1. 95 mol of sulfite ions,
number of moles of gallium(III) ions in the sample is
A sample of gallium(III) sulfite, Gaz(SO3)3, contains 1. 95 mol of sulfite ions,number of moles of gallium(III) ions in the sample is gallium(III) sulfite, Ga2(SO3)3, contains 1.95 mol of sulfite ions. The number of moles of gallium(III) ions in the sample is a 1.30 molb.
What is Molar Mass?
Molten sulfur is burned in air to produce sulfur dioxide gas. stage 2 Sulfur dioxide is reacted with oxygen to form sulfur trioxide. stage 3 Sulfur.the Molar Mass of CuSO4.5H2O. This molecule has 5 molecules of water attached to each molecule of copper sulphate.Gallium is commonly found to have variable charges. For metals like gallium, a Roman numeral is written in the chemical name to indicate its charge . balance chemical equations in molecular, total ionic, and net ionic and 2 moles of oxygen molecules react to yield 1 mole of carbon dioxide.
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7. A sample of 7.0 mL of concentrated sulfuric acid, H₂SO4 is used to make 250. mL of a 0.50 M sulfuric acid solution. What was the initial concentration of the sulfuric acid?
hydrogenation of fat does not: a.increase shelf life b.make it harder c.make it more unsaturated d.reduce the tendency for oxidative breakdown
Through hydrogenation processes, an unsaturated fat can be converted to a saturated fat.
Which fats have the lowest shelf life?Chemically speaking, monounsaturated fats are less stable than saturated fats but more stable than polyunsaturated fats. As a result, monounsaturated fats maintain their quality longer than polyunsaturated fats.
Which of the following functions does not include fats?Complete Resolution. Protein, not fat, is a factor in regulating the evolution of genetic traits. Additionally, fat aids in the absorption of vitamins A, D, E, and K. Fat serves as the body's main energy reserve and is essential for functions like digestion.
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Carbon and oxygen combine to form carbon dioxide. What are the reactants, or what is the reactant, in this chemical reaction?.
Combination reaction of Carbon and Oxygen:
Carbon dioxide is created when carbon and oxygen react as follows:
C + O₂ → CO₂ (1)
The reactants, carbon (C) and oxygen (O), are on the left side of reaction (1) above. This process solely produces carbon dioxide (CO2) as a result of this reaction (on the right side of the reaction).
What is a Combination Reaction?A direct combination reaction is one in which two or more substances (reactants) combine to create a single substance. It is sometimes referred to as a synthesis reaction (product). These processes are described by equations of form X + Y →XY (A+B→ AB). A combination reaction occurs when two or more components combine to form a single compound. In other terms, a combination reaction is a chemical reaction that occurs when two or more atoms or compounds react to create a single component.
Reactants are on left side of the arrow (tail)
Products are on right side of arrow (head).
Combination reaction of Carbon and Oxygen:
Carbon dioxide is created when carbon and oxygen react as follows:
C + O₂ → CO₂ (1)
The reactants, carbon (C) and oxygen (O), are on the left side of reaction (1) above. This process solely produces carbon dioxide (CO2) as a result of this reaction (on the right side of the reaction).
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How much energy does it take to warm 1. 0 kg of ice from −40°c to 0°c? the specific heat of ice is 2090 j/kg°c.
The energy required to warm 1. 0 kg of ice from −40°c to 0°c given the specific heat of ice is 2090 j/kg°c.. is 83,600 j/kg°C
What is Specific heat?
The amount of energy required to increase a substance's temperature by one degree Celsius per gram is known as its specific heat. Although it can alternatively be expressed in terms of calories, specific heat is often expressed in Joules per gram per degree Celsius (J/g oC). The specific heat capacity, a number that characterizes this chemical property, varies depending on the substance.
The total heat required will be the sum of heat energy needed to change the temperature of ice from –40°C to 0°C.
q (total) = mc (ΔT)
= 1 × 2090 × (0 + 40)
= 2090 × 40
= 83,600 j/kg°C
Therefore the energy required is 83,600 j/kg°C, for the given specific heat of the ice.
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What happens to mass and energy in a closed system?
OA. Only mass can enter or exit a closed system.
B. Both energy and mass can enter or exit a closed system.
C. Neither energy nor mass can enter or exit a closed system.
OD. Only energy can enter or exit a closed system.
SUB
Both energy and mass can enter or exit a closed system. The correct option to this question is D.
A closed system is one that only allows the flow of energy; it forbids the exchange of matter. Example: Heat can transfer when a lid is closed on a pot of boiling water, but matter cannot.In thermodynamics, an isolated system is analogous to a closed system in classical mechanics. Closed systems are frequently employed to restrict the variables that may have an impact on the outcomes of a particular experiment or problem.In other words, an airtight container is an example of a closed system.Boiling soup in a saucepan with a closed lid is another illustration of a closed system air conditioner.For more information on closed system kindly visit to
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What has the lowest volume 1kg lead, 1kg of iron, 1kg of gold, or 1kg of copper
Answer:
1 kg of lead occupies the smallest amount of space of the four substances
Explanation:
The densities of lead, iron, gold, and copper are 11.34 g/cm^3, 7.87 g/cm^3, 19.32 g/cm^3, and 8.96 g/cm^3, respectively. Therefore, the volumes of 1 kg of lead, iron, gold, and copper are:
Volume of 1 kg lead = 1000 g / 11.34 g/cm^3 = 87.94 cm^3
Volume of 1 kg iron = 1000 g / 7.87 g/cm^3 = 126.98 cm^3
Volume of 1 kg gold = 1000 g / 19.32 g/cm^3 = 51.93 cm^3
Volume of 1 kg copper = 1000 g / 8.96 g/cm^3 = 111.84 cm^3
As we can see, a kilogram of lead has the lowest volume of the four substances, with a volume of 87.94 cm^3. This is because lead is the densest of the four substances, which means that it has the highest mass per unit of volume. Therefore, 1 kg of lead occupies the smallest amount of space of the four substances
consider a sample of 1.0 mole of cl2 molecules and 1.0 mole of ca atoms. identify if each statement is true or false. both samples contain the same number of atoms both samples have the same mass in grams both samples contain 6.022 x 1023 atoms both samples contain 6.022 x 1023 particles (molecules or atoms) the sample of 1.0 mole of cl2 weighs more than the sample of 1.0 mole of ca true
The statement "Both the samples contain same number of atoms" is False.
The statement "both samples have the same mass in grams" is False.
The statement "both samples contain 6.022 x 1023 atoms " is False.
The statement "both samples contain 6.022 x 1023 particles (molecules or atoms)" is True.
The statement "the sample of 1.0 mole of cl2 weighs more than the sample of 1.0 mole of Ca" is True.
The number of atoms in both the case are :
Ca : 1 mole : 6.022 * 10^23 atoms
Cl2 : 1 mole : 2 * 6.022 * 10^23 atoms : 12.044 * 10^23 atoms
Weight of 1 mole of Cl2 : 70 g
Weight of 1 mole of Ca : 40 g
These Values are enough to justify the above True/False Statements.
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calculate the mass defect in fe-56 if the mass of an fe-56 nucleus is 55.921 amu. the mass of a proton is 1.00728 amu and the mass of a neutron is 1.008665 amu.
The mass is 0.81167 amu
What is mass?Mass is quantitative measure of interia a fundamental quantity of all matter.
Number of protons=42
Number of neutrons = 54
Mass of all the 42 protons = 42× 1.00728= 42.30576 amu
Mass of all 54 neutrons= 54 × 1.008665 = 54.46791 amu
Calculated mass of protons and neutrons in Mo-96 nucleus= 42.30576 amu + 54.46791 amu= 96.77367 amu
Actual mass of Mo-96 nucleus= 95.962 amu
Thus, the mass defect of Mo-96 nucleus= 96.77367 amu - 95.962 amu = 0.81167 amu
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If a sample of air in a closed container was heated would the total pressure of the air in the container increase decrease or remain unchanged. Explain your reasoning.
According to the Gay-Lussac's law, as the container is heated that is as temperature increases pressure also increases as they are directly proportional to each other.
What is Gay-Lussac's law?Gay-Lussac's law is defined as a gas law which states that the pressure which is exerted by the gas directly varies with its temperature and at a constant volume.The law was proposed by Joseph Gay-Lussac in the year 1808.
The pressure of the gas at constant volume reduces constantly as it is cooled till it undergoes condensation .The nature of graph of pressure versus temperature is linear.
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