Dinitrogen pentoxide (N2O5) decomposes to NO2 and O2 according to the following equation, 2 N2O5(aq) → 4 NO2(aq) + O2(g).. 

Consider the data given below for the following
first-order reaction:

Time (s)       [N2O5] (M)
    0                   3.6
    600               2.7
    1200             2.0
    1800             1.6
    2400             1.2
    3000             0.9
    3600             0.6

b) Plot a concentration vs. time graph with the following data.
c) Write the rate law expression for the reaction.
d) State the initial concentration of N2O5.
e) Calculate the instantaneous rate at t =800 s from your concentration vs. time graph.