1. In the reaction of thermal decomposition of a certain substance, the transformation time by 25% depended on temperature as follows:
t, ◦C 482.8 495.1 518.9 529.5 547.4
τ25%, min 44.3 23.7 7.03 4.53 1.89

Determine the activation energy and the pre-exponential factor. The initial concentration is assumed to be the same.

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