At two temperatures, the decomposition kinetics of a certain reagent A (product) was studied, finding the following linear fits For T=20°C: 1/[At]=57.143 + 2.8086 t (R2=.09994) For T=50°C: 1/[At]=57.143 + 5.4426 t (R2=.09987) The concentration is expressed in mol/L and the time in minutes. Determine: a) The activation energy of this reaction, in kJ mol-1 b) How many minutes must elapse, at each temperature, to decompose 50% of the reactant? Briefly comment on the results

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