Calculate delta G, delta A, and delta Stotal for each of the following processes and state any

Question

approximations made:
(a) Reversible vaporization of 39 g of C6H6 at its normal boiling point of 80.1°C and 1
atm;
(b) Adiabatic reversible expansion of 0.100 mol of a perfect gas with initial
temperature of 300 K, initial volume of 2.00 L, to final volume of 6.00 L.
(c) Adiabatic expansion of 0.100 mol of a perfect gas into with initial temperature of
300 K, initial volume of 2.00 L, to final volume of 6.00 L under vacuum