The first-order rate constant for the decomposition of N2O5, given below, at 70C is 6.82 10-3 s-1. Suppose we start with 0.0400 mol of N2O5(g) in a volume of 4.0 L. 2 N2O5(g) 4 NO2(g) + O2(g) (a) How many moles of N2O5 will remain after 2.5 min? . mol (b) How many minutes will it take for the quantity of N2O5 to drop to 0.005 mol? min (c) What is the half-life of N2O5 at 70C? min