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A certain second-order reaction (B→products) has a rate constant of 1.45×10−3 M−1⋅s−1 at 27 ∘C and...

A certain second-order reaction (B→products) has a rate constant of 1.45×10−3 M−1⋅s−1 at 27 ∘C and an initial half-life of 208 s . What is the concentration of the reactant B after one half-life?

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