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Compression and Cooling of Nitrogen Gas. A volume of 65.0 ft^3 of N2 gas at 90°F and 29.0 psig is compressed to 75 psig and cooled to 65°F. Calculate the ?nal volume in ft^3 and the ?nal density in lbm/ft^3. [Hint: Be sure to convert all pressures to psia ?rst and then to atm. Substitute original conditions into Eq. (pV=nRT) to obtain n, lb mol.]

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