The gas phase decomposition of dinitrogen pentoxide at 335 K
N2O5(g)-->2NO2(g)+½O2(g)
is first order in N2O5 with a rate constant of 4.70x10^-3s^-1.
How much time is required for 81.9% of the N2O5 intially present in a reaction flask to be converted to product at this temperature?
s