please show all steps and solve for f1, f2, fugacity coefficient 1&2 in addition to part b

Critical pressure and Temperture can be calculated from the steam tables Appendix B.

Part (a) 10 Marks For the system ethylene(1)/propylene(2) as a gas, estimate f^1,f^2,^1& ^2 at 150C,P=30 bar, and y1=0.35 Part (b) Repeat part (a) using thermoSolver software and compare your results and report the error difference in (\%)