4. what percentage of a material will persist after 90 minutes if it's half life is 30 minutes? d) 12.5% a) 50% 5 the cataluzed reaction has a c) 25% activatian

4. What percentage of a material will persist after 90 minutes if it's half life is 30 minutes? d) 12.5% a) 50% 5 The cataluzed reaction has a c) 25% activatian enerau and thus causec a b) 33%