Please show your work, and I will rate you! TWO PART QUESTION A)What is the rate constant of a first-order reaction that takes 277seconds for the reactant concentration to drop to half of its initial value B)A certain first-order reaction has a rate constant of 2.90×10^?3 s^-1 . How long will it take for the reactant concentration to drop to 1/8 of its initial value?