3. (10 pts) Problem 4.14: Steam at 35 bar and 600K enters a throttling valve that reduces the steam pressure to 7 bar. a) Assuming there is no heat loss from the valve, what is the exit temperature of the steam and its change in entropy? Hint: Use Figure 3.3-1 or Appendix A.III to estimate S^ and H^ values at the initial and final conditions. b) If air [assumed to be an ideal gas with Cp=29.3J/(molK) entered the valve at 35 bar and 600K and left at 7bar, what would be its exit temperature and entropy change