An ideal gas initially at 600 K and 10 bar undergoes a four-step mechanically reversible cycle in a closed system. In step 12, pressure decreases isothermally to 3 bar; in step 23, pressure decreases at constant volume to 2 bar; in step 34, volume decreases at constant pressure; and in step 41, the gas returns adiabatically to its initial state.

Take CP = (7/2)R and CV = (5/2)R.

(b) Determine (where unknown) V, T, and P for states 1, 2, 3, and 4

(c) Calculate Q, W, U, and H for each step of the cycle