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Some chemical reactions take a very long time to go to completion or cannot be directly measured. Which law allows one to use two or more thermochemical equations to
calculate the heat of a reaction indirectly?
-Pascal's Principle
-Hess's law of heat production
-Hess's law of heat division
-Hess's law of heat summation

Respuesta :

Answer:

D

Explanation:

If you add two or more thermochemical equations to give a final equation, then you also add the heats of reaction to give the final heat of reaction

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