22.4 litres of a gas weighs 70g at STP. Calculate the weight of the gas if it occupies a volume of 20 litres at 27 degree celsius and 700 mm of hg pressure.(ans=52.38g) Dont uz PV=nRT as we dont have that concept currently in class 9. Share with your friends Share 5 Manasa Hegde answered this 3 View Full Answer