How much entropy was generated in the throttling

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A cook filled a pressure cooker with 3 kg water at 20?C and a small amount of air and forgot about it. The pressure cooker has a vent valve, so if P > 200 kPa, steam escapes to maintain a pressure of 200 kPa. How much entropy was generated in the throttling of the steam through the vent to 100 kPa when half of the original mass escaped?

Reference no: EM131233980

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