5th Six Weeks Test Review

If temperature goes up in a closed container, what is likely to happen to pressure?

• Pressure will increase
• Pressure will decrease
• Remains constant
• Explosion!

A weather balloon has a volume of 105L at 0.97 atm when the temperature is 318K. What is the volume at 293K and 1.05 atm?

• 89.4 L
• 0.32 L
• 93.8 L
• 3.13 L

What are the values for STP?

• 0 K and 1 atm
• 273 K and 1 atm
• 0^oC  and 1 atm
• 273^oC and 1 atm

At a constant temperature, what will happen to the volume of a gas if the pressure increases?

• Increase
• Decrease
• Nothing
• Explosion!

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

When 0.250 moles of a gas is placed in a container at 25 °C, it exerts a pressure of 0.921 atm. What is the volume of the gas in the container?

• 0.557 Liters
• 6.64 Liters
• 8.74 Liters
• 0.0087 Liters

Which container will have a lower pressure?

• left
• right
• they both have the same pressure
• I don't know

In order to solve gas law calculations, temperature must be measured in:

• Fahrenheit
• Celsius
• Kelvin
• It doesn't matter 

What is the temperature in degrees celsius of natural gas in an oil pipeline if we know there are 0.91 moles of the gas in the pipeline and the volume of the pipeline is 5.43 L and the gas is exerting a pressure of 4.21 atm?
R = 0.0821  (L x atm) / (K x mol)

• 306 °C
• 579.4 °C
• 33.0 °C
• - 19.3 °C

Which law helps us find the moles of gas in a sample?

• Charles Law
• Boyle's Law
• Combined Gas Law
• Ideal Gas Law