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Most Important Selected Qs for JEE AdvancedChemistryThermodynamics (C)

In a process, 701 J of heat is absorbed by a system and 394 J of work is done by the system. What is the change in internal energy (in J) for the process?

Correct answer

307.00

Step-by-step solution

Given, q = + 701 J (heat is absorbed, heance q is positive.) W = - 394 J (work is done by the system, hence W is negative.) By first law of thermodynamics; Internal energy change, Δ U = q + w = + 701 J + (-394 J ) = + 307 J. Hence, internal energy of the system increases by 307 J.

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