The exam is open notes and open text book.
All problems have equal weight.
Determine the enthalpy change for each of the two processes. A closed, rigid 0.2 cubic meter tank contains 0.25 kg of carbon dioxide at a pressure of 50 kPa. Determine the change in internal energy and entropy if the pressure increases to 250 kPa. If the water is expanded in an isentropic process to 0.1 MPa, determine the change in internal energy.