Thermodynamics problem. A 5m3 rigid container containing water of 80% quality and a pressure of 2MPa. If the pressure is reduced to 400KP a by cooling the container, find the final mass of the vapor mg and the mass of the liquid mf .

A piston cylinder has 2.2kg of air at 300 K and 150 kPa. It is now heated up in a two step process. First constant volume to 1000 K (state 2) then followed by a constant pressure process to 1500 K, state 3. Find the final volume and final pressure.   (R of air = 0.287 KJ/kg K)

Ammonia (an ideal gas) is contained in a 1.5 cubic meter pistion. Initially it is 200kPa 20C but it is compressed to 40C (at a constant pressurre). During this process, 1500kJ of heat is rejected to th 20C surrounding and 750 kJ of work is done. Is this process possible?

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