(a) Explanation Write the expression for initial mass. m 1 = p 1 V R T 1 (I) Here, the initial pressure is p 1 , the volume is V , the charactertics gas constant is R and the initial temperature is T 1 . Write the expression for final mass. m 2 = p 2 V R T 2 . (II) Here, the final pressure is p 2 , the volume is V , the charactertics gas constant is R and the final temperature is T 2 Conclusion: Substitute 5 bar for p 1 , 1 m 3 for V , 286.98 J / kg ⋅ K for R and 295 K for T 1 in Equation (I). m 1 = ( 5 bar ) ( 1 m 3 ) ( 286.98 J / kg ⋅ K ) ( 295 K ) = ( 5 bar ) ( 10 5 N / m 2 1 bar ) ( 1 m 3 ) 84659.1 J / kg = 500000 J 84659 (b) To determine The heat transfer to the surroundings from the tank.

Fundamentals of Engineering Thermodynamics

8th Edition

ISBN: 9781118412930

Author: Michael J. Moran, Howard N. Shapiro, Daisie D. Boettner, Margaret B. Bailey

Publisher: WILEY

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Chapter 4.12, Problem 117P

(a)

To determine

The initial mass of air.

The final mass of the air.

(b)

To determine

The heat transfer to the surroundings from the tank.

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Chapter 4.12, Problem 116P

Chapter 4.12, Problem 119P

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Fundamentals of Engineering Thermodynamics

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The initial mass of air. The final mass of the air.