Behavior of Gases- Gas Laws

Multiple Choice

Calculate the decrease in temperature when 2.00 L at 21.0 °C is compressed to 1.00 L.

• 147.0 K

• 132.0 K

• 42.9 K

• 125. 125.0 K

Multiple Choice

If a gas at 25.0 °C occupies 3.60 liters at a pressure of 1.00 atm, what will be its volume at a pressure of 2.50 atm?

• 2.15 L

• 8.2 L

• 1.44 L

• 1.9 L

Multiple Choice

A 30.0 L sample of nitrogen inside a rigid, metal container at 20.0 °C is placed inside an oven whose temperature is 50.0 °C. The pressure inside the container at 20.0 °C was at 3.00 atm. What is the pressure of the nitrogen after its temperature is increased to 50.0 °C?

• .267 atm

• .125 atm

• 3.15 atm

• 3.31 atm

Multiple Choice

500.0 liters of a gas in a flexible-walled container are prepared at 700.0 mmHg and 200.0 °C. The gas is placed into a tank under high pressure. When the tank cools to 20.0 °C, the pressure of the gas is 30.0 atm. What is the volume of the gas?

• 3.15 L

• 9.51 L

• .0951 L

• 5.16 L

Multiple Choice

A sample of argon gas at STP occupies 56.2 liters. Determine the number of moles of argon in the sample.

• 2.50866 mol

• .00256 mol

• 2.954002 mol

• .01567 mol

Multiple Choice

A mixture of 4.5% H2, 76% O2, and 19.5% N2 has a total pressure of 2.3 atm. What is the partial pressure of O2?

• .021 atm

• 3.25 atm

• 1.75 atm

• 1.67 atm

Multiple Choice

What is the ratio of the velocity of helium atoms to the velocity of neon atoms at the same temperature?

• 1 : 2.25

• 2.25 : 1

• 3.08:1

• 1:4.2