[Question 1] An ideal gas undergoes the following process. 30+10=40 points Step 1: In isobaric process, state 1 (VI, P) is compressed to state 2 (V2, P2) Step 2: In isothermal process, state 2 (V2, P2) is compressed to state 3 (V3, P3) Step 3: In isochoric process, state 3 (V3, P3) is moved to state 4 (V4, P4) such that P4 > P Step 4: In isobaric process, state 4 (V4, P4) is expanded to state 5 (Vs, Ps) such that Vs = V2 Step 5: In isothermal process, state 5 (Vs, Ps) is expanded to state 6 (V6, P6) such that V6