iii) The entropy generation for nitrogen is 0.36 kJ/kgK when it is throttled from an initial pressure of 400 kPa. a. If nitrogen is considered to be an ideal gas, what will be the relation between temperatures upstream and downstream of the throttle valve? b. Find the entropy change of nitrogen c. Find the final pressure to which the gas is throttled d. Find the specific volumes upstream and downstream of the valve e. Find the ratio of the inlet to outlet area if the inlet and exit velocities are identical