A sample of gas weighing 0.0286g occupies a volume of 50 cc at 76 cm hg and 25 degree centigrade,what is the molar mass of the gas? Share with your friends Share 10 Geetha answered this According to ideal gas equationpV = nRTpV = W2M2 × RTM2 =W2pV × RT = 0.02861 × 0.05 × 0.0821 ×298 (since the pressure = 76 cm =1 atm and Volume = 50 cc =0 .05 L) = 13.99 g 34 View Full Answer