cloud you explain difference between steam and air with clear solution

(25 pts) A fluid at 50MPa and 600C enters a throttling valve and leaves at 100kPa. Determine the exit temperature and entropy generation if the fluid is (a) steam, (b) air. (25 pts) A fluid at 50MPa and 600C enters a throttling valve and leaves at 100kPa. Determine the exit temperature and entropy generation if the fluid is (a) steam, (b) air