TS EAMCET Medical 2018 May 3 Shift 1Paper

A vessel of volume 40 l contains ideal gas at the temperature 0 °C. After a portion of the gas has been let out. the pressure in the vessel decreased by Δp = 0.78 atm. while the temperature remaining constant. Assuming the density of the gas under normalconditions as ρ = 1.3 g/l. the mass of the released gas is