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what is the change in internal energy (in j) of a system that absorbs 0.842 kj of heat from its surroundings and has 0.649 kcal of work done on it? give your answer in scientific notation.
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what is the change in internal energy (in j) of a system that absorbs 0.842 kj of heat from its surroundings and has 0.649 kcal of work done on it? give your answer in scientific notation.

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