Explain a valve connected to the tank is opened

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Reference no: EM13226754

A well-insulated rigid tank of volume 0.2 m3 initially contains helium at 70°C and 200 kPa. A valve connected to the tank is opened, and helium is withdrawn slowly until the pressure within the tank drops to p. An electrical resistor inside the tank maintains the temperature at 70 °C.

Determine the mass of helium withdrawn, in kg, and the energy input to the resistor, in kJ, when p = 125 kPa.

Reference no: EM13226754

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