The following chemical reaction: A products shows first order kinetics with respect to A; rate =k[A]. Assume k=0.43104s1 If the concentration of A is 0.12molL1 at 15.8 minutes after the reaction starts, what was the concentration of A (in mol L1 ) when the reaction started? Remember: if you want to express an answer in scientific notation, use the letter "E". For example "4.32 x 104" should be entered as "4.32E4". Answer: The following chemical reaction: A products shows second order kinetics with respect to A;rate=k[A]2. If k=14.62104mol1Ls1 and the initial concentration of A is 0.28molL1, what is the half life of this reaction in minutes Remember: if you want to express an answer in scientific notation, use the letter "E". For example "4.32 104" should be entered as "4.32E4