## Chemistry and Chemical Reactivity (9th Edition)

$k=0.0056\ min^{-1}$
First oder process: $ln([N_2O_5]/[N_2O_5]_0)=-kt$ Assuming same solution volume, we can use this equation in a mass basis: $ln(2.50/2.56)=-k\times 4.26\ min\rightarrow k=0.0056\ min^{-1}$