A piston-cylinder assembly is initially 0.1 m3 of ethylene gas at 393K and 35 bar pressure. contains. The pressure of the gas in the piston-cylinder assembly is reversible and isothermally to 205 bar. is being brought

a)Assuming that ethylene obeys the ideal gas equation, we can calculate the heat transferred between the system and its surroundings. Calculate (J/mol) and work done (J/mol). b)Assuming that ethylene obeys the Peng-Robinson equation of state, the internal energy during the process Calculate the change (J/mol).