Ammonia at 400 K and 5 MPa enters a throttling valve and leaves it at 100 kPa. Determine the exit temperature if the equation of state is given by (30 p.) P( V b) = RT where b = 3.73105 m3 /mol. The molar heat capacity at constant pressure is given by CP = 25.895 + 0.033T, where CP is in J/mol.K and T is in K. dH = Cp dT +