Engineering Thermodynamics

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. 84 kJ
  • C. 54 kJ
  • D. 114 kJ
Answer: Option C.

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