Work done by a system is positive or negative?

Question

Chemistry

Agustin Garrison

8 January, 20:34

Work done by a system is positive or negative?

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Answers (1)

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Preston Benson · Answer 1

The internal energy has the symbol U. Q is positive if heat is added to the system, and negative if heat is removed;

... "W is positive if work is done by the system" ...

and negative if work is done on the system.

So, work done by a system is positive.