Ideal Gas Law Review

What pressure, in atm, is exerted by 2.50 L of gas containing 1.35 mol at 47 ^oC?
PV=nRT

• 14.19 atm
• 16.53 atm
• 18.42 atm
• 22.54 atm

At 250 k and 1.75 atm, a gas has a mass of 15.3 g and occupies 5.60 L. What is the molar mass of the gas?
M=mRT/PV

• 32.04
• 42.15
• 48.91
• 54.28

Find the density of Neon gas at .725 atm and 25°C 
D=MP/RT

• .35
• .47
• .60
• .79

What volume does 13.6 g of O₂ gas at 37°C and 135 kPa occupy?
PV=nRT

• 6.22 L
• 8.11 L
• 10.54 L
• 12.73 L

Calculate the partial pressure of H₂ at 20 ^oC when the vapor pressure of water is 17.5 torr. The total pressure of the gases is 750 torr.

• 767.5torr
• 732torr
• 42.86torr

Three gases, Ar, N₂ and H₂ are mixed in a 500L container. Ar has a pressure of 255 torr, N₂ has a pressure of 228 torr and H₂ has pressure of 752 torr. What is the total pressure in the container?

• 483torr
• 270torr
• 1235torr

An unknown gases diffuses .25 times faster than Helium. What is the molar mass of the unknown gas?

• 1 g/mol
• 64 g/mol
• 24 g /mol
• 16 g/mol

What is the rate of diffusion of Oxygen and Ammonium gas (NH₃)? Which diffuses faster?

• Ammonium 1.37 times faster
• Oxygen 1.37 times faster
• Ammonium .72 times faster
• Oxygen 3 times faster