What is the activation energy for a chemical reaction if the rate constant for the reaction at 438 K is measured to be 4.00 x 10^-5 s^-1 and the rate constant of the same reaction at 267 K is measured to be 2.50 x 10^-7 s^-1?
10.7 kJ/mol
543 kJ/mol
28.9 kJ/mol
6.17 x 10^-2 kJ/mol
417 kJ/mol