Question
Calculate the change in internal energy of the following system: A 100.0-g bar of gold is heated from 25 C to 50 C during
Calculate the change in internal energy of the following system: A 100.0-g bar of gold is heated from 25 C to 50 C during which it absorbs 322 J of heat. Assume the volume of the gold bar remains constant.
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The change in internal energy, ΔU, of a system can be calculated using the equation:
ΔU = Q - W
Where:
ΔU is the change in internal energy
Q is the heat absorbed or released by the system
W is the work done by or on the system
In this case, the volume of the gold bar remains constant, so there is no work done (W = 0). Therefore, the equation simplifies to:
ΔU = Q
Given that the gold bar absorbs 322 J of heat (Q = 322 J), the change in internal energy is:
ΔU = Q = 322 J
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