1. (5 points) Calculate the work w for the reversible isothermal expansion of exactly one mole of ethane gas at 500 K from an initial volume of 0.100 dm'to a final volume of 1.000 dm', assuming that ethane behaves as a a. perfect gas b. van der Waals gas with a = 5.580 bar dmmoland b = 0.0651 dm'mol c. Redlich-Kwong gas obeying the equation of state P RT A V-B T1/2 Vm (m + B) MTL with A = 98.831 dm bar mol 2K1/2 and B = .045153 dm mol-1