Helium is contained at in a 0.21 ft3 tank contains helium at 260.43°F is evacuated from atmospheric pressure of 14.55 lb/in2 to a final pressure of 2,550 Pa. Identify: a) the mass of helium pumped out; b) the mass of helium left in the tank; c) the pressure if the remaining helium temperature drops to 283 K.

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Helium is contained at in a 0.21 ft3 tank contains helium at 260.43°F is evacuated from atmospheric pressure of 14.55 lb/in2 to a final pressure of 2,550 Pa. Identify: a) the mass of helium pumped out; b) the mass of helium left in the tank; c) the pressure if the remaining helium temperature drops to 283 K.

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