what is the activation energy? rate = r = k [I-]^1 [S2O82-]^1 Mixtures:             Temperatures (celsius):        Initial Rates: 1                                      21.9                               6.45 * 10-4 2                                     38.9                              3.54 * 10-4 3                                      2.4                               4.35 * 10-4

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