If a question asks to find the concentration of something at x time and gives us a k value and an intial concentration and time, how would you know which integrated rate law to use if they did not tell you the order. Are there hints in the data provided which would aide in choosing which integrated rate law to use? Also, if they were to give you the rate law for the overall equation, would you use the overall order's integrated rate law or the specific reactant's order's integrated rate law.