Please show all work!! A 2 m3 system of air at STP (288 K and 101.3 kPa) is expanded reversibly to seven times its original volume. Calculate the following quantities • final pressure • final temperature • heat transferred • work done • entropy change  if the process is (a) adiabatic (b) isothermal (c) isobaric (make sure the signs for each answer is correct)

Draw the P-V diagram of the following mechanically reversible process of an ideal gas in a closed system and calculate the total work done. Indicate whether this work is done by the system or on the system. a. State A (2V, P) to State B (V, P) b. State B (V, P) to State C (V, 2P) c. State C (V, 2P) to State D (3V, 2P) d. State D to State A. What is the total internal energy change, enthalpy change and net heat flow (added or extracted) for the process?