The volume V of gas varies inversely as the pressure P on it. The volume of a gas is 200 cm^3 under a pressure of 21 kg/cm^2. What will it's volume under a pressure of 30/kg/cm^2?

1 Answer
Oct 27, 2016

Answer:

140 #cm^2#

Explanation:

Boyle's law states that for a fixed mass of gas at constant temperature, the absolute pressure and the volume of a gas are inversely proportional.
#p1*v1 =p2*v2#

So,
#p1*v1 =p2*v2#
21 kg/#cm^2# × 200 #cm^3# = 30 kg/#cm^2#× v2

v2 = 140 #cm^2#