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Iodine solution concentration

$\ce{I2}$ has a molar mass of $254$ g/mol. $\ce{KI}$ has a molar mass of $39 + 127 = 166$ g/mol. Then $1.3$ g $\ce{I2}$ is $\frac{1.3}{254} = 5.12$ millimole $\ce{I2}$. Also $2$ g $\ce{KI}$ is $\frac{...
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