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September 4, 2015

Homework Help: Thermodynamics

Posted by spencer on Monday, March 15, 2010 at 7:47pm.

A rigid insulated closed tank consists of two compartments of equal volume separated by a valve. Initially one contains air at 145 psia and temperature of 130 F, while second is completely empty(vaccum). the valve is opened and remains so until both are in pressure and temperature equilibrium. determine final pressure and temperature of air assuming each compartment is 20ft^3.

I know I will be using dU=dQ-dW , I think one of the terms if 0 but dont know what else.

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