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The decomposition of N2O5 takes place in carbon tetrachloride at room temperature according to the equation:

2N2O5 (soln) -------> 2N2O4 (soln) + O2 (g)

The rate constant is 2.35 x 10-4 s-1 at 293.0 K and 9.15 x 10-4s-1 at 303.0 K. Calculate Ea for this reaction.

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