The rate constant of a certain reaction is known to obey the Arrhenius equation, and to have an activation energy $E_a = 50.0$ kJ/mol. If the rate constant of this reaction is 37. $M^{-1}s^{-1}$ at 78.0 $^oC$, what will the rate constant be at 12.0 $^oC$? Round your answer to 2 significant digits.
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