One mole of a monoatomic ideal gas in the initial state (T = 273 K, P = 1 atm) undergoes two reversible processes:
a) Doubling of its volume at constant temperature.
b) Doubling of its pressure adiabatically.

Calculate Q, W, ΔU, ΔH, ΔS, ΔG, and ΔA for each of these processes. If the absolute values of entropy are required for the calculations, please indicate when necessary.