Question

why is there absorption of energy in contain chemical reactions and release of energy in other reactions​

Answer 1

Due to the absorption of energy when chemical bonds are broken, and the release of energy when chemical bonds are formed, chemical reactions almost always involve a change in energy between products and reactants. This stored chemical energy, or heat content, of the system is known as its enthalpy.

Answer 2

Answer:

Due to the absorption of energy when chemical bonds are broken, and the release of energy when chemical bonds are formed, chemical reactions almost always involve a change in energy between products and reactants. ... This stored chemical energy, or heat content, of the system is known as its enthalpy.

Explanation:

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