1. In the warp drive system of an intergalactic spacecraft, 13.0 kg/s of water vapor is reversibly and isothermally expanded from 500. to 125 Pa at 100.°C. Determine the heat transfer rate and the power produced. Assume ideal gas behavior.
2. Water vapor is heated from 300. to 400.°F in a steady flow isobaric process. Determine the percent error in calculating the heat transfer rate per unit mass flow rate by using the ideal gas equations for system pressures of (a) 20.0 psia, (b) 2.00 psia, and (c) 0.200 psia.