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Calculate DE, and determine whether the process is endothermic or exothermic for the following cases:

(a) A system releases 43 kJ of heat to the surroundings and has 665 kJ of work done on it by the surroundings.

DE = kJ. This process is.

(b) q = 35 kJ and w = -287 kJ.

DE = kJ. This process is.

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Category:- Chemistry
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