Question

1. The specific volume of a pure substance increases during the vaporization process.T 2. For pure substances at any given temperature, PSat < P superheated. 3. Tsat of a pure substance decreases as pressure increases. 4. The internal energy of a pure substance increases during the vaporization process. 5. At a given pressure, the temperature of the super heated vapor is higher than the saturation temperature of the pure substance.T The pressure for superheated R-134a at 13°C with v = 0.3 m³/kg is , 7. Assume nitrogen to be an ideal gas. The specific volume at 300 kPa and 220° C is_____m/kg. 8. The saturation pressure of R-134a at -20 °C is____КРа. 9. The critical pressure and temperature of H2O are_____and_________respectively. The latent heat of vaporization of 3-kg of saturated liquid water at 300 kPa is____kJ.

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