Calculate Suniverse for the following isothermal process and show that the result is consistent with the second law of thermodynamics. Assume Tsur=Tsys and Pex= 1 bar. A piston is loaded with an ideal gas and the pressure is maintained with a large mass. The mass is then suddenly removed. The pressure before expansion is 2 bar and the molar volume of the gas is 0.04m3/mol. At the end of the expansion, the pressure is 1 bar and the molar volume is 0.08m3/mol. (Hint: The process is not reversible (the weight is suddenly removed). Use the first law to calculate Q and W )