Heat (q) is positive when the system gains thermal energy and negative when the system loses thermal energy.
What is the change in internal energy for the system?
Express the energy in kilojoules to two significant figures.
Heat (q) is ___ when the system gains thermal energy and ____ when the system loses thermal energy.
When work (w) is done by the system, the value is _____ . When work is done on the system, the value is ______ .
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What scientific concept do you need to know in order to solve this problem?
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