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posted by  Hbub on 11/5/2009 11:00:27 AM  |  status: Closed  |  Earned Karma: 50

Mass of air problem (Thermodynamics)

Course Textbook Chapter Problem Needs by
Thermodynamics N/A N/A N/A 11/9/2009 at 1:00:00 PM
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Very Confused, if anyone out there can help it would be greatly appreciated?
  
         Air (a constant specific heat ideal gas) at a pressure of 500 psia and a temperature of 75°F is contained in a tank with a volume of 700 ft3. A certain amount of gas is
released, so that the pressure in the tank drops to 250 psia. The expansion process
is isentropic.

Determine the mass (Ibm) of air remaining in the tank.
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posted by Jemmi on 11/6/2009 12:35:40 AM  |  status: Live
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