Which statement correctly describes an endothermic chemical reaction?
(1) The products have higher potential energy than the reactants, and the ΔH is negative. (2) The products have higher potential energy than the reactants, andthe ΔH is positive. (3) The products have lower potential energy than the reactants, andthe ΔH is negative. (4) The products have lower potential energy than the reactants, andthe ΔH is positive.
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