Question

what is uses of delta H? and when they are used?​

Answer 1

In chemistry, the letter "H" represents the enthalpy of a system. Enthalpy refers to the sum of the internal energy of a system plus the product of the system's pressure and volume. The delta symbol is used to represent change. Therefore, delta H represents the change in enthalpy of a system in a reaction.

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Answer 2

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Explanation:

ΔH is the "enthalpy change", Hf is the final enthalpy of the system (in a chemical reaction, the enthalpy of the products), Hi is the initial enthalpy of the system (in a chemical reaction, the enthalpy of the reactants).