Please help with this question. Share with your friends Share 0 Goutam Pradhan answered this Solution: density of gas(d)=PMRT where P=Pressure of gas, M=gram molecular mass,T=Temperature. =273°C=(273+273)K=546K3 g.L-1=1140 mm Hg760 mm Hgatm×M0.0821 l.atm.mol-1.K-1×546K⇒M=89.6 g/molThus, gram molecular mass of gas is 89.6 g/mol 0 View Full Answer