Question: A 1-m3 insulated, rigid tank contains air at 800 kPa, 25C. A valve on the tank is opened, and the pressure inside quickly drops to

A 1-m3 insulated, rigid tank contains air at 800 kPa, 25°C. A valve on the tank is opened, and the pressure inside quickly drops to 150 kPa, at which point the valve is closed. Assuming that the air remaining inside has undergone a reversible adiabatic expansion, calculate the mass withdrawn during the process.

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