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3. A two-phase liquid-vapor mixture of water, initially at 1.0 MPa with a quality of 71.1436%,...

3. A two-phase liquid-vapor mixture of water, initially at 1.0 MPa with a quality of 71.1436%, is contained in a rigid, well-insulated tank. The mass of H2O is 2 kg. An electric resistance heater in the tank transfers energy (heat) to the water at a constant rate of 80 W. Determine

(a) the time, in hour, when the temperature in the tank reaches 350oC, and

(b) the final pressure, in MPa.

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