Where: [A]=concentration of reactantA [A]_(0)=initial concentration of reactantA. k=rate constant t=time In order to solve for the rate constant k, in two steps you must: Step One Add the same expression to each side of the equation to leave the term that includes the variable by itself on the right-hand side of the expression: (Be sure that the answer field changes from light yellow to dark yellow before releasing your answer.) underline ( )+(1)/([A])=underline ( )+kt+(1)/([A]_(0)) Drag and drop your selection from the following list to complete the answer: (1)/([A_(0)]) [A_(0)] -[A_(0)] -(1)/([A_(0)])