Gas Stoichiometry: Automobile Airbags 6. Calculate the volume occupied by 25.2 g of CO2 at 0.84 atm and 25°C (R-0.08206 L atm/K mol). 7. A sample of nitrogen gas is confined to a 14.0 L container at 375 torr and 37.0°C. How 760 many moles of nitrogen are in the container (R-0.08206 L. atm/K mol, 1 atm torr)? Gases are sold in large cylinders for laboratory use. What pressure, in atmospheres, will be exerted by 2,500 g of oxygen gas (O2) when stored at 22C in a 40.0 L cylinder (R 0.08206 L·atm/K·mol)? 8. A flask with a volume of 3.16 L contains 9.33 grams of an unknown gas at 32.0°C and 1.00 atm. What is the molar mass of the gas (R = 0.08206 L·atm/K·mol)? 9.