If for a gas R/Cv=0.67 this gas is made up of molecules which are Share with your friends Share 0 Sachin Pandey answered this Dear StudentWe know, R=Cp − C v RCv=Cp-CvCv=0.67CpCv-1=0.670CpCv=γ=1.67=53Hence monoatomic gas moleculeRegards -1 View Full Answer