Question

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A system does 566 kJ of work and loses 216 kJ of heat to the surroundings.


What is the change in internal energy, Δ , of the system? Note that internal energy is symbolized as Δ in some sources.

Answer 1

Answer:

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The change in internal energy of the system = -772kJ

Explanation:

Heat lost by the system , a = -266KJ

Workdone by the system, W = -506KJ

The first law of thermodynamics states that:

Change in internal energy = q + w

Substituting values into the equation

Change in internal energy = (-266KJ) + (-506KJ)

Change in internal energy = -722KJ