Problem: At a particular temperature, N2O5 decomposes according to a first-order rate law with a half-life of 3.0 s. If the initial concentration of N2O5 is 1.0 x 1016 molecules/mL, what will be the concentration in molecules/mL after 10.0 sec? a) 9.9 x 1014 b) 1.8 x 1012 c) 7.3 x 109 d) 6.3 x 103 e) 9.4 x 102

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At a particular temperature, N2O5 decomposes according to a first-order rate law with a half-life of 3.0 s. If the initial concentration of N2O5 is 1.0 x 1016 molecules/mL, what will be the concentration in molecules/mL after 10.0 sec?

a) 9.9 x 1014

b) 1.8 x 1012

c) 7.3 x 109

d) 6.3 x 103

e) 9.4 x 102

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