1. For the gas phase decomposition of dinitrogen pentoxide at 335 K 2 N₂O₅4 NO₂ + O₂ the average rate of disappearance of N₂O₅ over the time period from t = 0 s to t = 127 s is found to be 7.6410^-4 M s^-1. The average rate of formation of NO₂ over the same time period is M s^-1.

2. For the decomposition of nitrosyl bromide at 10 C 2 NOBr2 NO + Br₂ the average rate of disappearance of NOBr over the time period from t = 0 s to t = 32 s is found to be 1.9010^-3 M s^-1. The average rate of formation of Br₂ over the same time period is M s^-1.