J.R. S. answered 12/09/21
Ph.D. University Professor with 10+ years Tutoring Experience
I can't easily draw on this Wyzant platform, but you can look up the energy diagram for an exothermic reaction and copy it. The energy of the reactants will be higher on the y-axis than the energy of the products.
We know this is an exothermic reaction because the value of ∆H is negative.