onstant (?) data collected during the experiments. Plot the data to answer the questions. What is the value of the activation energy, ?a , for this reaction? ? (?) ? (?−1) 400 0.000659 420 0.00327 440 0.0181 460 0.0589 480 0.213 500 0.615 520 1.66 540 3.99 560 9.64 580 20.1 Ea= What is the value of the pre‑exponential factor (sometimes called the frequency factor), ? , for this reaction?

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