what is hess,s law.Explain it.
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Hess's Law of Constant Heat Summation (or just Hess's Law) states that regardless of the multiple stages or steps of a reaction, the total enthalpy change for the reaction is the sum of all changes. This law is a manifestation that enthalpy is a state function.
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Hess law states that when reactants are converted to products, then change in enthalpy in one step is same as change in enthalpy in multiple steps... to reach the products..
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