Which of the following is legal? A. Discharging oil in U. S. waters
B. discharging sewage in state waters
C. disposing of oil waste at an approved facility
D. disposing of plastic in coastal waters

Carbon dioxide gas expands isotherm a turbine from 1 mpa, 500 k at 200 kpa. assuming the ideal gas model and neglecting the kinetic and potential energies, determine the change in entropy, heat transfer and work for each kilogram of co2.