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1. For an Endothermic reaction, the Potential Energy of the reactant (PEr) is greater than, less than or equal to (circle one) the Potential Energy of the product (PEp)?
2. On the Potential Energy diagram of an Exothermic reaction, what represents the Activation energy of the reaction?
3. A "-" sign of the heat of reaction (ΔH) indicates that the energy is being ___________ by the system.
4. Since the activation energy must be added to the reaction for each set of reactant to form a set of products, explain why you just need to add the activation energy once to an exothermic reaction (and the reaction keeps going) whereas the
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