An insulated heat exchanger is used to condense water by transferring heat to an ideal gas mixture. The water enters at 150 kPa with a quality of 0.85, and exits as a saturated liquid at 150 kPa. The mass flow rate of the water is 15 kg/s. The ideal gas mixture enters at 20°C and exits at 110°C. Determine the mass flow rate of the ideal gas mixture for mixture compositions of (a) 30% N2 and 70% CO2 (by volume), (b) 30% N2 and 70% O2 (by volume), and (c) 30% N2 and 70% H2 (by volume).
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