What is the mole fraction of calcium chloride in 3.35 m CaCl2 (aq)? The molar mass of CaCl2 is 111.0 g/mol and the molar mass of water is 18.02 g/mol.

Q: The partial pressures of CH4, N2, and O2 in a sample of a gas mixture were found to be 123 mmHg, 505…

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Q: what is the mole fraction of Ne in a mixture containing 10.1 g of Ne, 79.9g of Ar and 83.8 g of Kr

A: Number of moles of a substance is equal to the mass of the substance divided by its molar mass.

Q: The boiling point of amphetamine, C9H13N, is 201oC at 760 torr and 83oC at 13 torr. What is the…

A: Given- The boiling point of amphetamine, C9H13N, is 201oC at760 torr and 83oC at 13 torr. What is…

Q: What is the mole fraction of Kr

A: Given :- Pt (total pressure) = 7.60 atm                Pxe  = 1.70 atm               PAr = 2.90 atm…

Q: Calculate the mole fraction of He in a mixture of He and N2 that contains 4.25 g of He and 29.5 g of…

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Q: What partial pressure of hydrogen results in a molarconcentration of 1.0 mmol dm3 in water at 25 oc?

A: Given data: Molarity of solution = 1 mmol/dm3 = 0.001 mol/L Temperature = 25oC  Formula used:…

Q: A sample of lead glass is prepared by melting together 20.0g silica , SiO2 and 80.0g of lead (II)…

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Q: If the molar composition of dry air is 78% N2, 21% O2 and 1% Ar, calculate the partial pressure of…

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Q: How to compact hydrogen to increase its storage efficiency? By the definition, universal gas…

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Q: A mixture of helium and neon gases at 281 K contains 3 times the number of helium atoms as neon…

A: Given : Number of helium atoms = 3 X number of neon atoms. Temperature = 281 K  And concentration…

Q: A sample of volume 18.3 L has a mass of 57.9 g.(a) Is the material gaseous or condensed?(b) If the…

A: Since we know that gases molecules are spread over the entire vessel therefore it has very less…

Q: How does the partial pressure of gas A in a mixture compare to its mole fraction in the mixture?…

A: How does the partial pressure of gas A in a mixture compare to its mole fraction in the mixture has…

Q: 5. A vessel of volume 22.4 dm3 contains 2.0 mol H2 and 1.0 mol N2 at 273.15 K. Calculate (a) the…

A: Given,  Volume = V = 22.4 dm3  Moles of H2 = nH2 = 2.0 mole  Moles of N2 = nN2 = 1.0 mole…

Q: A commercial mercury vapor analyzer can detect, in air, concentrations of gaseous Hg atoms (which…

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Q: What is the volume of a sample of ethane at 467 K and 1.1 atm if it occupies 405 mL at 298 K and 1.1…

A: Given, V1 = 405 mL V2 = ? T1 = 298 K T2 = 467 K The given pressure is considered as constant since…

Q: chlorine pentafluoride boron trifluoride mole fraction: partial pressure: mole fraction: partial…

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Q: What is the new temperature (in K) of a closed gas system, when its volume is compressed from 5.6 L…

A: Given that: initial volume, V1 =  5.6 L final volumeV2 = 2.3 L initial temperature, T1 =  455 K To…

Q: What is the mole fraction of commercial Concentrated hydrofluoric acid which is 55.0% HF by mass?

A: The concentration of the hydrofluoric acid is = 55.0% (by mass) The molar mass of HF is = 20.01…

Q: Since CO2 makes up 0.0355% of the atmosphere (on the average) calculate the molar fraction of…

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Q: What is the pressure in kilopascals of 1.926 x 10-6 moles of helium gas, if it occupies a volume of…

A: Ideal behaved gas and pressure calculation using ideal gas equation

Q: A breathing mixture used by deep-sea divers contains helium, oxygen, and carbon dioxide. What is the…

A: Dalton's law: Dalton's law of partial pressures states that in a mixture of non-reacting gases, the…

Q: What is the temperature (in K) of 0.450 mole of neon in a 2.00 L vessel at 4.68 atm?

A: Ideal Gas Law :-  PV = nRT  P is the pressure of gas  V is the volume occupied by gas n is the…

Q: What is the temperature (in K) of 0.840 mole of neon in a 2.00 L vessel at 4.68 atm?

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Q: A vessel of volume 22.4 dm3 contains 2.00 mol of H2(g), and 1.0 mol of N2(g) at 273.15 K. Calculate…

A: The mole fraction of hydrogen gas (χH2) is calculated as shown below where nH2 and nN2 are the…

Q: What pressure is required to achieve a CO2 concentration of 0.0690 mol L' at 20° C?

A: Pressure required to achieve CO2 concentration of 0.0690 mol L-1 at 20 0C can be calculated by using…

Q: What is the mole fraction of O2 in a mixture of 4.08 g O2, 4.14 g of N2 and 1.5 g of H2?

A: GivenMass of O2 = 4.08 gMolar mass of O2 = 32 g/moleMoles of O2 = Mass of O2Molar mass of O2Moles of…

Q: What is the partial pressure of SO2 at a concentration of 41000 PPM at STP?

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Q: A vessel of volume 22.4 dm3 contains 2.0 mol H2(g) and 1.0 mol N2(g) at 273.15 K. Calculate (i) the…

A: (i) The mole fraction of hydrogen gas (χH2) is calculated as shown below where nH2 and nN2 are the…

Q: Use the experimental value of the thermal conductivity of neon (Table 16A.1) to estimate the…

A: Given:Thermal conductivity KT=16.3 x mWK-1m-1                                    =16.3 x…

Q: A 3.85 g sample of a KCl−KClO3 mixture is decomposed by heating and produces 117 mL O2(g), measured…

A: Given, V = 117 mL = 0.117 L as 1 mL = 0.001 L T = 23.5 + 273 = 296.5 K P = 110 kPa The value of R is…

Q: Elemental analysis of an organic liquid with a fishy odour gives the following elemental mass…

A: Given: Pressure = 435 torr = 0.572 atm Temperature = 150 oC = 423 K Volume = 150 mL mass of impure…

Q: 1. A vessel of volume 24.4 dm3 contains 1.0 mol H2 and 2.5 mol N2 at 298.15 K. Calculate (a) the…

A: 1) Mole fraction (χ) of a component is the ratio of mole of a component to the total moles of…

Q: If the atmosphere is 25 degC and 1.2 atm and contains 0.79 mole fractions of N2, 10-S mole fractions…

A: Given that : Pressure of the atmosphere = 1.2 atm Mole fraction of N2 = 0.79 Mole fraction of the…

Q: 1. Hydrogen peroxide, H2O2, is used by some water treatment systems to remove the disagreeable odor…

A: Mole fraction is the ratio of the number of moles of solute of interest to the total moles present…

Q: The atmospheric pressure on the top of Mt. Everest, an altitude of 8850 m, is only 0.35 X 105 Pa.…

A: Giiven - The atmospheric pressure on the top of Mt. Everest, an altitude of 8850 m = 0.35 X 105 Pa…

Q: Carbogenum (a mixture of gases 7% CO2 and 93% O2). It is used in surgical practice to stimulate…

A: At STP: Volume of a mole of a gas = 22.4 L So, Number of mol = Volume/22.4

Q: By volume, dry air is 78% N2, 21% O2 and 1% Ar. What is the partial pressure of each of these…

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Q: A vessel of volume 22.4 dm3 contains 1.5 mol H2(g) and 2.5 mol N2(g) at 273.15 K. Calculate (i) the…

A: The mole fraction is equal to the ratio of the number of moles of the given substance to the total…

Q: Sulfur dioxide reacts with oxygen in the presence of plati- num to give sulfur trioxide: 2 SO2(g) +…

A: Given data: Number of moles of SO2 = 26 mol Number of moles of O2 = 83 mol Number of moles of SO3 =…

Q: How many grams of ammonia will exert the same  pressure as 28 mg of hydrogen sulfide, H2S, in the…

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Q: What is the mole fraction of hydrogen chloride in hydrochloric acid which contains 36% HCl by mass?…

A: Given, % by mass HCl = 36 % Mole fraction of hydrochloric acid (HCl) in the hydrochloric acid…

Q: Calculate the mole fractions of the molecules of a mixture that contains 56 g of benzene (C6H6) and…

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Q: What is a supercritical gas? What is the function of a modifier?.

A: Since you have posted multiple questions in a single session we are entitled to answer only first…

Q: What volume does 1.5 x 1024 molecules of CO2 occupy at STP7

A: Since we know that one mole of a gas at STP has 22.4 L volume.  And we also know that  1 mol any…

Q: Aqueous ammonia is 32% ammonia (by mass) NH3. The rest is water, H20  What is the mole fraction of…

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Q: Calculate the height of a column of liquid glycerol (d= 1.26 g/em³), in meters, required to exert…

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Q: Vessel A (volume 16.6 L) contains 30 g of hydrocarbon, and its pressure at 300 K is 1 atm.What is…

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Q: Mass of a vacuumed (empty) vessel of volume 5 L is 640.05 g, and mass of the same vessel filled with…

A: Number of moles of hydrocarbon can be determined using Ideal gas Equation as follows,