Review Gas Laws

Neon occupies a volume of 2.80 L at -35°C. What volume will it occupy at 43°C?

• 3.44 L
• 4.1 L
• 2.65 L
• 3.7 L

If 200 mL of a gas at 27°C is cooled to -33°C at a constant pressure, the volume will be

• 250 mL
• 204 mL
• 196 mL
• 160 mL

A sample of gas measures 4.22 L at 120°C at 900 mmHg. What volume would it occupy at STP?

• 2.48 L
• 3.47 L
• 5.13 L
• 7.19 L

If the pressure exerted by a gas at 25^oC in a volume of 0.044 L is 3.81 atm, how many moles of gas are present?

• .002766 mole

• .0069 mol

• 2.766 mol

• 9.887 mol

A 0.25 mol sample of neon gas at 18^oC and 0.799 atm is heated to 49^oC. The new gas pressure is 1.11 atm. What is the volume of the neon gas?

• 30 L

• 5.95 L

• 7.47 L

• 1.50 L

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

• 483torr
• 270torr
• 1235torr

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

• 767.5torr
• 732torr
• 42.86torr

Gas Laws involve what three terms?

• Solid Liquid Gas 
• Speed Velocity Acceleration 
• Elements Compounds Mixtures 
• Pressure Temperature Volume 

Charles' Law States...

• As Pressure goes up volume goes down
• As Pressure goes up temperature goes up
• As Volume goes up temperature goes up 
• As Pressure goes down volume goes down 

Whose law states that as pressure goes up, volume goes down?

• Charles 
• Boyle
• Aglow
• Mazias