Published by:
CGP EDU Academic Team
Published on: August 13, 2026
An evacuated glass vessel weighs 40.0 g when empty, 135.0 g when filled with a liquid of density 0.95 g mL -1 and 40.5 g when filled with an ideal gas at 0.82 atm at 250 K. The molar mass of the gas in g mol -1 is :
(Given : R = 0.082 L atm K -1 mol -1 )
Text Solution
Verified by ExpertsThe correct answer is:
D
Mass of liquid = 135 - 40 = 95 g
Volume of liquid 
mL
= 100 mL = 0.1 L
mass of ideal gas = 40.5 - 40 g = 0.5 g
PV = nRT
M=125
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