Unit 8: Properties of Gases

Which of the following temperatures is appropriate to convert 25^oC into the Kelvin scale?

• 373K
• 272K
• 372K
• 273K

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

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

In the ideal gas law, which variable represents the gas constant?

• n
• R
• T
• V

Calculate the volume that a 0.323-mol sample of a gas will occupy at 265 K and a pressure of 0.900 atm (make sure you use the correct R value).

• 7.18 L 
• 7.81 L
• 4.63 L
• 4.36 L

You have a gas that has a pressure of 2 ATM and a volume of 10L.  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 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.

• 767.5 torr

• 733 torr

• 42.86 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 

Pick the best answer to explain all properties of gases....

• They're fluids 
  Can be compressed
  Little space between particles 
• They're solids 
  Can be compressed
  Lots of space between particles 
• They're fluids 
  Cannot be compressed
  Lots of space between particles 
• They're fluids 
  Can be compressed
  Lots of space between particles 

What happens to the average kinetic energy of matter when it is heated?

• It increases
• It decreases 
• It doesn't change
• It cannot be determined

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4