The rate equation for the decomposition of n2o5 (giving NO2 and O2) is rate=k[N2O5]. For the reaction at a particular temperature, the value of k is 5.0x10^-4 s^-1.
a) Calculate the half-life of N205 in the reaction
b) How long does it take for the N2O5 concentration to drop to one tenth of its original value?