Problem: What is meant by the internal energy of a system?

FREE Expert Solution

Internal energy of a system:


For heat, q:

▪ + q → if the system gains, takes in, or absorbs heat or energy
▪ – q → if the system loses, evolves, gives off, or releases heat or energy

For work, w:

▪ + w → work is done on the system by the surroundings (volume: compresses)
▪ – w → work is done by the system on the surroundings (volume: expands)

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What is meant by the internal energy of a system?

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