Answer :
The part of an Energy Graph that is represented by the highest point is called; Activated State
Understanding Energy Graphs
The part of an energy graph that is represented by the highest point is called activated state.
This is because activated state is simply the highest energy of the chemicals as they proceed through a reaction and as such it means that they would be the highest point on the graph, since they are also the the highest energy level.
Finally, the activated state can also be used to represent the products or the reactants, dependent on the type of reaction.
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