The following chemical reaction: A products shows second order kinetics with respect to A; rate = k[A]2. Assume k = 9.96 x 10-5 mol-1 L s-1 . If the initial concentration of A is 0.29 mol L-1, what is the concentration of A (in mol L-1) after 2.8 hours? 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".