Thermodynamic properties of steam

Question description

Steam is expanded isentropicaly  from a pressure of 40 bar Рtemperature 300 Degrees C to a pressure of 0.005 bar. I am looking for the final dryness fraction by calculation from the property tables.I am also looking for the change in specific entropy when saturated water is boiled to produce dry saturated steam at 50 bar.Lastly , how much steam is produced when 1 kg of water at 165 degrees C and 8 bar is flashed into a cylinder at 2 bar.

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