Question
A chemical reaction is run in which 153 Joules of heat are absorbed and the internal energy changes by +568 Joules. Calculate w for the system.
A chemical reaction is run in which 153 Joules of heat are absorbed and the internal energy changes by +568 Joules.
Calculate w for the system.
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The first law of thermodynamics states that the change in internal energy (ΔU) of a system is equal to the heat transferred (Q) to the system minus the work (W) done by the system:
ΔU = Q - W
Given that the internal energy changes by +568 Joules and 153 Joules of heat are absorbed, we can substitute these values into the equation:
+568 J = 153 J - W
To solve for W, we need to isolate it on one side of the equation. By rearranging the equation, we have:
W = 153 J - 568 J
W = -415 J
Therefore, the work done by the system is -415 Joules.
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