Gas Laws

Which law describes the proportional relationship between the pressure and volume of a gas?

• Boyle’s Law

• Gay-Lussac’s Law

• Charles’s Law

• Natural Law

The volume contains nitrogen gas under a pressure of 4.972 atm at 31.8ºC. Calculate the number of moles of nitrogen in the tank. (PV=nRT; R= 0.0823)

• 0.002 mol

• 0.525 mol

• 0.018 mol

• 1.90 mol

According to Gay-Lussac’s law:

• pressure is inversely proportional to volume at constant temperature.

• pressure is directly proportional to temperature at constant volume.

• volume is inversely proportional to temperature at constant pressure.

• volume is directly proportional to temperature at constant pressure.

What is 50 C in Kelvin?

• 223

• 100

• 50

• 323

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? (Boyle’s Law)

• 5 L

• 20 L

• 1 L

• 10 L

If I initially have 4.0 L of a gas at a pressure of 1.1 atm, what will the volume be if I increase the pressure to 3.4 atm? (Boyle’s Law)

• 1.29 L

• 12.3 L

• 14.96 l

• 0.85 L

At constant pressure, a sample of gas occupies 425 mL at 210. K. What volume does the gas occupy at 250. K? (Charle’s Law)

• 2.3 L

• 505.9 mL

• 8.20 L

• 10.7 mL

A sample of hydrogen exerts a pressure of 1.25 atm at a temperature of 168 K. What

pressure will the gas exert at 585 K? ( Gay-Lussac’s Law)

• 4.35 atm

• 0.35 atm

• 210 atm

• 731.25

According to Boyle’s law, the volume of a gas is inversely proportional to its pressure at constant temperature.

• True

• False

A relationship in which one variable increases as the other variable decreases is an inverse relationship.

• True

• False