The reaction 2A → B is second order in A with a rate constant of 28.1 M−1 · s−1 at 25°C. (a) Starting with [A]0 = 0.00

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The reaction2A → B
is second order in A with a rate constant of28.1 M−1 · s−1 at25°C.
(a) Starting with [A]0 = 0.00783 M,how long will it take for the concentration of A to drop to0.00180 M?
___ s
(b) Calculate the half-life of the reaction for[A]0 = 0.00783 M.
___ s
(c) Calculate the half-life of the reaction for[A]0 = 0.00255 M.
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