Question

A gas has a volume of 25 ml at a pressure of 100 kpa. what will the new volume of the gas be at a pressure of 150 kpa if the temperature remains constant?

Answer 1

Use Boyle's law of gases: at constant temperature, PV = constant.

=> P1 * V1 = P2 * V2

=> V2 = (P1 * V1) / (P2)

=> V2 = (100 kPa * 25 ml ) / (150 kPa) = 16.7 ml ≈ 17 ml

Answer: 17 ml (rounded to two significan figures)