Gases Take Home Quiz

Under which of the following conditions do REAL gases behave most like IDEAL gases?

(hint... these conditions suggest a low density of gas particles and them moving so fast they barely notice the others are there)

• High pressure and high temperature

• High pressure and low temperature

• Low pressure and low temperature

• Low pressure and high temperature

If Temperature is held constant and volume is decreased, what will happen to pressure?

(hint: This is the effect of squeezing a balloon)

• increases

• decreases

• stays the same

A sample of gas has a volume of 3.0 L and pressure of 101.3 kPa.

After adjusting the volume, the pressure is measured to be 303.9 kPa. What is the new volume?

(the temperature did not change)

• 9 L

• 1 L

• 9 kPa

• 1 kPa

If Temperature and pressure are held constant, gases of the same volume contain the same number of particles. This is the description of:

• Boyle's law

• Dalton's law

• Charles' law

• Avogadro's law

BONUS:

A sample of oxygen gas, O_{2 (g)} , at STP has a volume of 44.8 Liters. How many moles of oxygen is this?

• 24.4 moles

• 44.8 moles

• 1.00 moles

• 2.00 moles

The volume of a gas is decreased. (while the pressure is held constant)

What happens to the temperature of this gas based on Charles' Law?

• increases

• decreases

• stays the same

Which of the following is NOT a part of the Kinetic Molecular Theory of gases?

• Gas particles lose kinetic energy as they collide with each other and the walls of their container.

• Individual gas particles do not have volume.

• Gas particles move in constant, straight lines

• Gas particles do not experience electrostatic attraction nor repulsion with each other.

True or False?

Samples of gas can be compressed.

• True

• False

Based on Boyle's Law, when the volume of a gas increases while the temperature is held constant, the pressure of the gas must...

• Increase

• Decrease

What type of relationship to pressure and volume have?

• direct

• inverse

• long distance

• parasite : host