Part B

A certain second$-$order reaction $(B$ products$)$ has a rate constant of $1\mathrm{.}40{10}^{-3}$

$M^{-1}*s^{-1}$ at $27C$ and an initial half$-$life of $232s.$ What is the concentration of the

reactant $B$ after one half$-$life?

Express your answer with the appropriate units.

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