The graph shows the reaction pathway for the reaction q + r n + m. interpret the graph by describing what each of the letters (a through g) represents and by explaining whether the reaction is endothermic or exothermic and how you know.

The letter A represents the amount of energy that must be added to the reactants which are at energy level F, so that they may be have their energy raised to level B, from where the reaction can occur.
The letter G shows the products, and it is visible that they are at a lower energy level than the reactants were. This means that in order to get from the higher energy to the lower energy, the reactants must release energy. Therefore, this reaction is exothermic.

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Explanation: