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Shiloh wanted to observe the changes that occurred during an exothermic reaction. He monitored the changes and placed them in a chart. Which statement best describes his data?
The activation energy was reached at 10:45 a.m. Without the additional energy, the reaction would have stopped.
The activation energy was reached at 11:15 a.m. The previous change was the threshold point for a reaction. The activation energy was reached at 10:15 a.m. The additional energy allowed for a lower activity level.
The activation energy was reached was 10:45 a.m. The additional energy did not affect the reaction.