N2O5 is used as a source of NO2 in chemical reactions. The compound decomposes in a first order reaction. If the initial concentration of N2O5 = 0.400 M, and the concentration is 0.025 M after 120 seconds, what is the rate constant k of the reaction? a. 7.50 s-1 b. 333 s-1 c. 2.77 s-1 d. 2.31 x 102s1 e. 5.21 x 104s

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