Just as the depletion of stratospheric ozone today threatens life on Earth today, its accumulation was one of the crucial processes that allowed life to develop in prehistoric times. You must have the correct sig figs. 3 O2 (g) ---> 2 O3 (g)(a) Express the rate of reaction in terms of the rate of disappearance of O2 and the rate of appearance of O3.(b) At a given instant, the rate of disappearance of O2 is 1.61 x 10^-5 mol/Ls. What is the rate of appearance of O3?