Respuesta :

quasarJose

Answer:

B

Explanation:

The letter in this energy profile diagram of an exothermic change that signifies energy is B;

  • An exothermic reaction is one in which heat is liberated to the surroundings.
  • The surrounding becomes hotter at the end of the change.
  • B is the enthalpy change of the reaction
  • A is the activation energy
  • C is the reactant
  • D is the product

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