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# Solution: A perfect gas has a value of R= 58.8 ft-lb/lb-R and k= 1.26

#### Problem Statement: Power Plant Engineering

Power Plant Elements Problem Solving

A perfect gas has a value of R = 58.8 ft-lb/lb.-ยฐR and k = 1.26. If 20 Btu are added to 5 lbs. of this gas at constant volume when initial temperature is 90ยฐF, find the final temperature.

A. 100ยฐF

B. 104ยฐF

C. 154ยฐF

D. 185ยฐF

The final temperature of the gas is equal to 103.77ยฐF .

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