A 01m3 rigid tank is initially filled with air at 400 kpa, Ask an Expert

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A 0.1m3 rigid tank is initially filled with air at 400 kPa and 300K. Then a valve is opened and the air flows out isothermally until the pressure in the tank is 100 kPa. Find the amount of heat transferred during this process. (Assume Rair=0.287 kJ/kg-K, neglect changes in PE & KE).

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