Gas Laws Practice

A sample of nitrogen gas has a volume of 32.4 L at 20°C. The gas is heated to 220ºC at constant pressure. The final volume of nitrogen is _____

1. A gas evolved during the fermentation of sugar was collected. After purification its volume was found to be 25.0 L at 22.5°C and 93.6kPa. How many moles of gas were collected?

• 0.95 mol

• 1.05 mol

• 12.5 mol

• 22.4 mol

If 22.5 L of nitrogen at 748 mm Hg are compressed to 725 mm Hg at constant temperature, what is the new volume?

• 23.2

• 21.8

• 0.0431

• 0.0459

A gas with a volume of 4.0 L at a pressure of 205 kPa is allowed to expand to a volume of 12.0 L. What is the pressure in the container if the temperature remains constant?

• 68.3

• 0.0146

• 615

• 0.00163

Calculate the new temperature when 6.00 L at 20.0 °C is compressed to 4.00 L.

• 195

• 0.00512

• 440

• 0.00228

A container containing 5.00 L of a gas is collected at 100 K and then allowed to expand to 20.0 L. What must the new temperature be in order to maintain the same pressure (as required by Charles' Law)?

• 400

• 1492

• 25

• 1

A sealed container has a pressure of 1.5 atm at 25°C. If the temperature is raised to 125°C, what will be the new pressure?

• 2

• 1.12

• 7.5

• 0.3

A gas balloon has a volume of 106.0 liters when the temperature is 45.0°C and the pressure is 740.0 mm of mercury. What will its volume be at 20.0°C and 780.0 mm of mercury pressure?

• 92.7

• 44.7

• 103

• 109

If 10.0 liters of oxygen at 0°C and 760.0 mm Hg are heated to 512°C, what will be the new volume of gas if the pressure is also increased to 1520.0 mm Hg?

• 14.4

• 1.74

• 0

• 57.5

The pressure of a gas is reduced from 1200.0 mm Hg to 850.0 mm Hg as the volume of its container is increased by moving a piston from 85.0 mL to 350.0 mL. What would the final temperature be if the original temperature was 90.0°C?

• 1059

• 124

• 0.016

• 62.4