Question

2.
A sample of a gas has a volume of 850 cm3 at a temp of 27 °C and a pressure of 85 kPa. What is the
pressure of the gas when the volume is 752 cm3 and the temperature is 15 °C?

Answer 1

PV=nRT

At the same sample, n and R are constant.

P2 = P1 x ( V1/V2) x ( T2/T1 )

P2 = 85kPa x ( 850/752 ) x ( 288/300 )

= 92.2kPa