A chemical reaction that is second order in x is observed to have a rate constant...

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A chemical reaction that is second order in x is observed to have a rate constant...

A chemical reaction that is second order in x is observed to have a rate constant of 3.1 x 10‑2 L/mol·s. If the final concentration of x is 0.24 M after 40 seconds, what was the initial concentration? Enter your answer with two significant figures.

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