Molecular lodine, I2(g), dissociates into iodine atoms at 625K with a first-order rate constant of 0.271s1. (a) What is the half-life for this reaction? (b) If you start with 0.046MI2 at this temperature, how much will remain after 5.17s assuming that the iodine atoms de not recombine to form I2 ? 35M 2N2O2(g)+4NO2(g)+O2(g) (o) How many moles of N2O, will remain after 3.0 min? mat (b) How many minutes will it tale for the quantity of Nog to dreo to 0.005 mol? min (c) What is the half-ife of N2O3 at 70+C ? men