Gas Laws STP

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

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

Tags

NGSS.MS-PS1-4

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

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

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

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

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

For example, if you increase the temperature of a gas inside a balloon, the balloon will....
[pressure is constant (k)]

• Expand (increase in volume)
• Deflate (decrease in volume) 

How do you convert C to Kelvin (K)?

• C + 273

• C x 273

• C / 273

• C + 32 + 273