Question $8(1$ point$)$

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When a sample of the aqueou's layer with a volume of $14\mathrm{.}21mL$ is collected, it requires $18\mathrm{.}85mL$ of a titrant solution of $S_2{O}_3^{2-}$ with a concentration of $0\mathrm{.}01807M$ to reach the endpoint. The reaction has a $2$:$1$ mole ratio of thiosulfate to all reducible iodine species. Calculate the concentration of total reducible iodine $($in $mo\frac{l}{L})$ in the aqueous layer. Include only the numerical answer $($no units$).$

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