An automobile engine generates 2155 Joules of heat that must be carried away by the cooling system. The internal energy changes by -2736 Joules in this process

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Topic: Chemistry Posted 1 year ago

An automobile engine generates 2155 Joules of heat that must be carried away by the cooling system. The internal energy changes by -2736 Joules in this process

An automobile engine generates 2155 Joules of heat that must be carried away by the cooling system. The internal energy changes by -2736 Joules in this process. Calculate w for the engine. This represents the work available to push the pistons in this process.

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Koala Tutor

Oct 1, 2023

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The first law of thermodynamics states that for a closed system, the change in internal energy (ΔU) is equal to the heat transferred (Q) minus the work done (W) on the system.

ΔU = Q - W

In this case, ΔU = -2736 J (negative because the internal energy decreases), and Q = 2155 J.

Therefore, we can rearrange the equation to solve for W:

W = Q - ΔU
W = 2155 J - (-2736 J)
W = 2155 J + 2736 J
W = 4891 J

So the work available to push the pistons in this process is 4891 Joules.

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