iveaction progress Energy profiles for the uncatalyzed and bromide-catalyzed decomposition of H2O2. How many steps are there in the catalyzed reaction? Express your answer as an integer. From the following data for the first-order gas. phase isomerization of CH3NC at 215C. calculate the first-order fate constant and halraife Calculate the first-order rate constant. for the reaction: Express your answer using three significant figures. Calculate the half- -Yfe. Express your answer using three significant figures