An unknown gas has a density of 1.71 g/L at 755 mm Hg, 25°C. How many moles of unknown gas are present? [A] What is the molar mass of the unknown? [B]

Q: (A) A sample of carbon dioxide gas at a pressure of 1.12 atm and a temperature of 242 °C, occupies a…

A: Part A Pressure (P) = 0.709 atmInitial temparature (T1) = 242oC = (242 + 273) K = 515 KInitial…

Q: A certain gas sample has a volume of 225 mL at a pressure of 1.25 atm at 27oC; what would be its…

A: Given: P1 = 1.25 atm V1 = 225 ml P2 = 0.75 atm V2 = ? according to boyles at constant temperature.…

Q: Automobile airbags are inflated by the rapid decomposition of sodium azide (NaN3). 2 NaN3(s) --> 2…

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Q: At 0°C a 1.0-L flask contains 2.0*10^-2 mole of N2, 2.0*10^2 mg and 4.6*10^21 molecules of NH3. What…

A: Let us consider that the flask contains 2x10-2 N2 moles, 2x102 mg of O2 and 4.6x1021 NH3 molecules.…

Q: The total pressure of gases A, B, and C in a closed container is 4.1 atmatm. If the mixture is 36%…

A: We know the gaseous mixture containing 36% of A, 42%of B, and 22% of C by volume,  Let consider the…

Q: A gas mixture contains O2, N2, and Ar at partial pressures of 125, 175, and 225 mmHg, respectively.…

A: The partial pressure of carbon dioxide in milliliters of mercury has to be calculated.

Q: In a mixture consisting of two gases, the partial pressure of N2 (g) is 0.300 atm and the partial…

A:

Q: A mixture containing 2.13 g each of CH4(g), C2H4(g) and C4H10(g) is contained in a 1.50 L flask at a…

A: To solve this problem we will use Ideal gas equation  PV = nRT  Where , P = pressure…

Q: A sample of a gas at 77°C and 1.33 atm occupies a volume of 50.3 L. (a)  How many moles of the gas…

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Q: For an ideal gas, calculate the following quantities. (a) The pressure of the gas if 0.155 mol…

A: The ideal gas law equation is:PV = nRTwhere:P is the pressure of the gas .V is the volume of the gas…

Q: A gaseous compound is 30.4% nitrogen and 69.6% oxygen by mass. A 5.25g sample of this gas occupies a…

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Q: For an ideal gas, calculate the following quantities. (a) The pressure of the gas if 0.145 mol…

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Q: A gas mixture contains He, Ne, and H2S at partial pressures of 125, 175, and 225 mm Hg,…

A: Interpretation -  To determine the partial pressure in the milliliters of mercury of Ne when a…

Q: A gas exerts a pressure of 1atm at standard temperature. What should be the new temperature (in…

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Q: Q1. A hydrocarbon (Ma=224.253 g/mol) found to contain 64.27% carbon and 7.19% hydrogen by mass, the…

A: We will first determine the molecular formula of the organic compound. Then apply stoichiometry to…

Q: A sample of gas contains 0.1900 mol of HCl(g) and 9.500×10-2 mol of Br2(g) and occupies a volume of…

A: The expression of ideal gas equation is shown below: PV = nRT Where; P = pressure V = volume n =…

Q: gas mixture contains O2, N2, and Ar at partial pressures of 125, 175, and 225 mm Hg, respectively.If…

A: In this question, we want to determine the Partial pressure of CO2 gas When total pressure and…

Q: Calculate the density (in g/L) of Freon-12, CF2Cl2, at 32.2°C and 0.968 atm.

A: Since you have posted multiple questions, we are entitled to answer the first only.

Q: 9Calculate the molar mass (in g/mol) of a gas if 0.165 g of it at 1.22 atm occupies a volume of 34.8…

A: For an ideal gas  PV = nRT  Where volume of the n mol of gas at temperature T and pressure P =V

Q: A gaseous "CFC" compound has a density of 5.456 g/L at 0.993 atm and 22.0°C. (a) Calculate the molar…

A: Given , density of CFC =5.456gL Pressure = 0.993 atm temperature, T=22°C =(22+273)K=295 K

Q: What is the partial pressure of SO2 in a gas mixture of 8.8 g of SO2 and 6.5 g of C2H4O2 at a total…

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Q: What is the density (in g/L) of hydrogen gas at 19.0 ∘C and a pressure of 1665 psi ?

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Q: A mixture of gases contains 3.46 g of SO2, 5.53 g of H2, and 1.50 g of O2. What is the partial…

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Q: At 105.1 oC and 0.4500 atm pressure, a gas occupies a volume of 0.600 L.  How many liters will it…

A: Gas laws , PV = nRT  P1V1/T1 = P2V2/T2

Q: A gas has the following elemental composition: C = 82.7%, H = 17.3% in mass. At stp (room…

A: Given, C = 82.7 % H = 17.3 %  Temperature = 0°C = 273 K Pressure = 760 mmHg = 1 atm Density = 2.496…

Q: A mixture containing 2.21 g each of CH4(g), C,Ha(g) and CaH,o(g) is contained in a 1.50 L flask at a…

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Q: Given the ideal gas law PV=nRT calculate the pressure of a gas in atmospheres if 14 moles of the gas…

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Q: Q7. A gas mixture that has the following composition in percent by volume: 10.2% CO2, 21.0% CO,…

A: Solution -

Q: For an ideal gas, calculate the following quantities.(a) The pressure of the gas if 0.135 mol…

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Q: A gaseous mixture that contains 0.0500 mol each of N₂, H₂, and He is kept in a cylinder with a…

A: Since you have asked multiple questions, we will answer first question for you. In order to get…

Q: 11.) A mixture of neon and krypton gases contains neon at a partial pressure of 312 mm Hg and…

A: Mole fraction = total pressure/ partial pressure Total pressure = 312+446 = 758 mmHg

Q: A gas mixture contains 0.1044 mol of N2 and 0.0740 mol of HI. What is the partial pressure of N2, if…

A: It is an example of Dalton Law

Q: At a temperature of 25 degrees Celsius and 740 atmospheres of pressure, 1.50 liters of H2S gas is…

A:

Q: A crude oil burned in electrical generating plants contains about 1.2% sulfur by mass. When the oil…

A:

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.