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Monday, October 25, 2004

Hess's Law Of Heat Summation

Rule first enunciated by Germain Henri Hess, a Swiss-born Russian chemist, in 1840, stating that the heat absorbed or evolved in any chemical reaction is a fixed quantity and is independent of the path of the reaction or the number of steps taken to obtain the reaction. Hess's law is a consequence of the first law of thermodynamics and need not be considered a separate thermodynamic

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