Could someone help me derive the equation that i need to solve this problem?

has ki The first-order gas reaction ss0 Ch So + Cl = 2,20x10ss at 593k. what percent of a sample of sozlz would be decomposed by heating at 5930 for 1 hour? for 3 hours? How long will it take for half the socle to decompose? for 1st order : In [A] .-kt [A] let [A]. = 1 [Alt = 1 -[A]. SA - [Alo [A] =-kt In 1-0 Int. -let - kt 1- CAJ. = e CA] -let 1-[A] = [A]o e AJO