Gas Laws Review

Which of the following represents the ideal gas constant (R)?  

• PV / nt
• nT / PV
• nPT
• nPT / V

Using the ideal gas law and the ideal gas constant, what information do you need to determine the volume of gas if you know the pressure and the temperature?  

• the molecular mass of the gas 
• the number of moles of the gas
• the density of the gas 
• the percentage composition of the gas 

The volume occupied by 3.00 moles of N₂ at STP is ____.  

• 67.2 L
• 22.4 L
• 7.47 L
• 134.4 L

Which law helps us find the moles of gas in a sample?

• Charles Law
• Boyle's Law
• Combined Gas Law
• Ideal Gas Law

Calculate the volume that a 0.323-mol sample of a gas will occupy at 265 K and a pressure of 0.900 atm.

• 7.80 L 

• 7.81 L
• 4.63 L
• 4.36 L

Determine the Kelvin temperature required for 0.0470 mol of gas to fill a balloon to 1.20 L under .998 atm pressure. 

• 310. K 

• 333 K 

• 273 K 

• 307 K 

What pressure, in atm, is exerted by 2.50 L of gas containing 1.35 mol at 320. K? PV=nRT

• 14.2 atm

• 16.5 atm

• 18.4 atm

• 22.5 atm

Determine the number of moles in a container of gas at STP with a volume of 99.2 L. 

• 2222.08 moles
• 4.43 moles
• 22.4 moles 
• 76.8 moles

In order to solve gas law calculations, temperature must be measured in:

• Fahrenheit
• Celsius
• Kelvin
• It doesn't matter 

As number of moles goes up, volume 

• goes down.
• goes up.
• stays the same