Gas Laws and KMT practice

A student inflates a balloon with helium then places it in the freezer. The student should expect

• the balloon's volume to increase

• the balloon's volume to decrease

• the balloon's moles to increase

• the balloon's moles to decrease

If a hairspray can is heated, what can be expected of the pressure of the gas inside the can?

• The pressure will increase

• The pressure will decrease

• The pressure will remain constant

• The pressure will equalize

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

In order to convert to Kelvin, you add ______ to the Celsius measurement.

• 372
• 273
• 237
• 732

What is 50 °C in Kelvin?

• 223
• 323
• 100
• 50

A real gas does not exhibit ideal gas behaviour because

• there are significant attractions between molecules so that the volume of the gas is reduced

• the size of the particles are inconsequential and so their volume can be ignored in calculations

• the collisions between the gas particles are perfectly elastic and so no energy is gained or lost

• only noble gases are ideal gases and all other gases are called real gases

Which of the following term does not involve an ideal gas law ?

• Pressure

• Volume

• Temperature

• Time

Which of the following graphs represents pressure versus volume (V) for a real gas at a constant temperature

• A

• B

• C

• D

This graph represents which gas law ?

• Grahams law

• Avogadros law

• Boyles Law

• Charles Law

Which of the following is a pair of equivalent values ?

• -298 K and O ^o C

• 298 K ans -273 ^o C

• 319 K and 46 ^o C

• 319 K and 592 ^o C