Ch 11 Review!

What is 50 C in Kelvin?

• 223
• 323
• 100
• 50

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

• Volume will increase
• Volume will decrease
• Volume will not change

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

The following graph shows ____ relationship. 

• Direct
• Inverse

Boyle's law :  The pressure and volume of a gas show a _____ relationship. 

• Inverse 
• Direct 

Determine the initial temperature of a random gas when the initial volume is 2.2 L and it is cooled to 88K with a volume of 0.85 L. 

• 0.029 K
• 0.021 K
• 227.76 K
• 34 K

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

• 767.5torr
• 732torr
• 42.86torr

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

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

• 0 K 
• 107 K 
• 207 K 
• 307 K 

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