4. (10pts) A 1.5-m³ insulated rigid tank contains 2.7 kg of carbon dioxide at 100 kPa. Now paddle-wheel work is done on the system until the pressure in the tank rises to 150 kPa. Determine the entropy change of carbon dioxide during this process. Assume constant specific heats. open or close system? ①Is it Ⓒ Draw the control volume? 3) Assumptions 4) Solve