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What is the correct answer?

4

A mixture of gas expands from 0.03 m3 to 0.06 m3 at a constant pressure of 1 MPa and absorbs 84 kJ of heat during the process. The change in internal energy of the mixture is

A. 30 kJ

B. 54 kJ

C. 84 kJ

D. 114 kJ

Correct Answer :

B. 54 kJ


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