It is important for scientists to know how much energy is given off or absorbed in a chemical reaction. Which options below would indicate an exothermic reaction? delta H = –

delta H = +

Energy is considered a reactant in the reaction: A + B + energy ---> C + D

Energy is considered a product in the reaction: A + B ---> C + D + energy

Energy is released in the reaction.

Energy is absorbed in the reaction.

A,D&E

Explanation:

A, D, E

Explanation:

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a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.