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Calculate the changes in internal energy...

Calculate the changes in internal energy of a system if,
400 calorie of heat energy are added to the system and the system does 500 calories of work on the surroundings.

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To calculate the change in internal energy of the system, we will use the First Law of Thermodynamics, which states: \[ \Delta U = Q + W \] where: - \(\Delta U\) = change in internal energy, ...
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