Question: the answer L lf energy is conserved, how is it possible to change the state of a thermodynamic system by allowing heat to flow in

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L lf energy is conserved, how is it possible to change the state of a thermodynamic system by allowing heat to flow in or out, or work to be done on or by the system? Energy is only conserved if you consider the system plus all its surroundings. The total energy of the system is constant; it just changes form. Energy is conserved, but entropy increases

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