Worksheet for Combined Gas Law

Directions: Show given information, formula, plug into formula, unit cancellation, correct answer.

1. The volume of a gas is 27.5 mL at 22.0^oC and 0.974 atm. What will be the volume at 15.0^oC and 0.993 atm?

Answer: 26.3 mL Soln

2. A sample of gas at 47^oC and 1.03 atm occupies a volume of 2.20L. What volume would this gas occupy at 107^oC and 0.789 atm?

Answer: 3.41 L Soln

3. A 350. mL air sample collected at 35^oC has a pressure of 550. torr. What pressure will the air exert if it is allowed to expand to 425 mL at 57^oC?

Answer: 485 torr Soln

4. A mas occupies 1.75 L at -23^oC and 150. kPa. What would be the temperature when the gas occupies 1.30 L at 210. kPa?

Answer: 260. K Soln

5. At 40.^oC a gas occupies 820. mL. The same gas has a temperature of 60^.oC and a volume of 1250. mL and at a pressure of 1.40 atm. What would be the volume at the original conditions?

Answer: 2.01 atm Soln

6. A gas at 7.75 x 10⁴ Pa and 17^oC occupies a volume of 850. cm³. At what temperature, in degrees Celsius would the gas occupy 720. cm³ at 8.10 x 10⁴ Pa?

Answer: -16^oC Soln