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4. In a particular process, the internal energy of a system increases by 41.4 J and the quantity of work the system does on its surroundings is 81.2 J.
a. Is heat absorbed or released by the system?
b. What is the value of q?

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Answer:

letter A.endothermic: Heat is absorbed by the system from the surroundings. exothermic: Heat is released by the system into the surroundings.law of conservation of energy: In any physical or chemical process, energy is neither created nor destroyed.

letter B.In nuclear physics and chemistry, the Q value for a reaction is the amount of energy absorbed or released during the nuclear reaction.The value relates to the enthalpy of a chemical reaction or the energy of radioactive decay products. It can be determined from the masses of reactants and products

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