The decomposition of N2O5?

N2O5 ---- NO2 + NO3 (slow step)
NO2 + NO3 ------ No2 + O2 + NO (fast step)
NO2 + N2O5 ----- 3 NO2 (fast step)

a) what is the overall reaction for the decomposition of N2O5?
b) What is the molecularity of each elementary step?
c) what is the rate law for the decomposition of N2O5?
3 answers 3