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MHT CET202123 Sep 2021Morning ShiftChemistryThermodynamics (C)Actual

In a process, a system performs 238 ~J of work on it's surrounding by absorbing 54 ~J of heat. What is the change in internal energy of system during this operation?

Options

  1. A222 J
  2. B-192 J
  3. C54 J
  4. D-184 J

Correct answer

D. -184 J

Step-by-step solution

Heat absorbed by the system is (+) ve. Work done by the system is (-) ve. aligned & W =-238 ~J & q =+54 ~J & U = q + w & =54-238 & =-184 ~J aligned

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