1. The problem statement, all variables and given/known data Please consider ethylene at 152oF and 126 atm. Please determine the molar volume (ft3/lbmole) if Z is determined by Corresponding States Theory. 2. Relevant equations Z=PVm/RmT Vm= Molar volume R=Rm/M M= molecular weight Rm=1545(ft*lbf)/(lbmol*oR) Zc=(Pcvc)/(R*Tc) Tc=283 K Pc=51.2 Bar M=28.05 Kg/Kmol PR=P/Pc 3. The attempt at a solution I can find Vc but thats not 152 oF and 126 atm. I don't know Z at these conditions either so I can't use the other equation.