A gas at 7°C and 100kPa occupies 20 litres. The gas is heated to 27°C at pressure 120kPa. Find the new volume.

Answer 1

volume is directly proportional to the absolute (Kelvin) temperature

and inversely proportional to the pressure

v = 20 L * [(new temp.) / (old temp.)] * [(old press.) / (new press.)]