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Hess’s law is based on the first law of thermodynamics which says that energy cannot be created or destroyed but can be converted from one form to another. Hess’s Law of Heat Summation states that the enthalpy change for a reaction is the same whether it occurs by one step or by any (hypothetical) series of steps.28 May 2018

The First Law of Thermodynamics: Internal Energy, Heat, and Work

In chemistry we talked about the

Hess’s Law and Heats of Formation

How can we calculate the enthalpy change of a reaction without doing it? There are two easy ways! This is how we can make sure …

1st law of thermodynamics, enthalpy, and, Hess’s law

This video introduces you to the