An automobile engine provides 623 Joules of work to push the pistons. In this process the internal energy changes by -2942 Joules. Calculate q for the engine. The represents the amount of heat that must be carried away by the cooling system. Joules A chemical reaction is run in which 761 Joules of work is done on the system and the internal energy changes by + 512 Joules. Calculate q for the system. Joules

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