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SashulF [63]
3 years ago
16

What must happen before a chemical reaction can begin? The activation energy must be exceeded. The activation energy must be rea

ched. The concentrations of products and reactants must be equal. The concentration of reactant molecules must be reduced.
Biology
2 answers:
irina [24]3 years ago
9 0

Explanation:

For any enthalpy change in a chemical reaction, (exothermic/endothermic), the activation energy must be reached so as to break the strong chemical bonds between the reactant molecules.

Nimfa-mama [501]3 years ago
9 0

Answer:

its b

Explanation:

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