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A rigid tank is divided into two rooms, both containing water, by
a membrane. Room A is at 200 kPa, v = 0.5 m3/kg, VA = 1 m3, and room B contains 3.5 kg at 0.5 MPa, 400ºC. The membrane now ruptures and heat transfer takes place so that the water comes to a uniform state a 100ºC. Find the heat transfer during the process.

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