An ideal gas with constant heat capacities undergoes a change of state from conditions T1, P1 to

Question:

An ideal gas with constant heat capacities undergoes a change of state from conditions T1, P1 to conditions T2, P2. Determine (H (J mol-1) and (S (J mol-1 K-1) for one of the following cases.
(a) T1 = 300 K, P1 = 1.2 bar, T2 = 450 K, P2 = 6 bar, Cp / R = 7/2.
(b) T1 = 300 K, P1 = 1.2 bar, T2 = 500 K, P2 = 6 bar, Cp / R = 7/2.
(c) T1 = 450 K, P1 = 10 bar, T2 = 300 K, P2 = 2 bar, Cp / R = 5/2.
(d) T1 = 400 K, P1 = 6 bar, T2 = 300 K, P2 = 1.2 bar, Cp / R = 9/2.
(e) T1 = 500 K, P1 = 6 bar, T2 = 300 K, P2 = 1.2 bar, Cp / R = 4.