Unit 12 Gas Laws

If a balloon is cooled what will happen to the volume?

• Volume will increase

• Volume will decrease

• Volume will not change

• The balloon doesn't have a volume

Which of the following would increase the (gas) pressure of a system?

• Increase the Temperature
• Pump in more gas
• Decrease the volume
• All of these

You have a gas that has a pressure of 2 atm and a volume of 10 L. What would be the new volume if the pressure was changed to 1 atm?

• 5 L

• 20 L

• It would stay at 10L

• 1 L

A sample of gas with a volume of 30.0 mL at 25.0^oC is heated to 50.0^oC.  What is the new volume of the gas?

• 60.0 mL
• 15.0 mL
• 27.5 mL
• 32.5 mL

A sample of oxygen gas has a volume of 150.0 mL when its pressure is .947 atm. What will the volume of the gas be if it is lowered to a pressure of 0.658 atm and the temperature remains constant?

• 72 mL
• 144 mL
• 216 mL
• 288 mL

Three gases, Ar, N₂ and H₂ are mixed in a sealed 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?

• 483 torr

• 270 torr

• 1235 torr

• -390 torr

A container is filled with H₂, and H₂O. Calculate the partial pressure of H₂ when the pressure of water is 17 torr. The total pressure of the gases is 750 torr.

• 767.5 torr

• 733 torr

• 42.86 torr

• 955 torr

When the temperature is constant (k) inside a balloon, if you add pressure on it, the volume will ..... 

• Decrease
• Increase
• Not Change at all
• Particles will solidify 

Why does a car get low tire pressure in the COLD...what two variables are to blame? 

• Pressure and Temperature
• Temperature and Volume
• Volume and Pressure
• Temperature and Weight 

Directly proportional means that as one value increases ....................

• the other stays the same 
• the other increases as well
• the other decereases
• the other goes to zero