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. = a) Determine the P (bar), V (m3/mol), and T (K) at each state 1, 2, 3, and 4. b) Calculate Q, W and AU for each step of the cycle (J/mol)