Answered

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How many grams of solution must be added to 10.0 g of KCI in order to prepare a12.0% (m/m) KCl solution?

Sagot :

Mass percent concentration (% m/m) is given as the mass of the solute per 100 units mass of solution.

[tex]\begin{gathered} \%mm=\frac{mass\text{ }solute}{mass\text{ }solution}\times100 \\ 12\%=\frac{10.0g}{xg}\times100 \\ 0.12=\frac{10.0\text{ }g}{x\text{ }g} \\ x=\frac{10.0\text{ }g}{0.12} \\ x=83.3g \end{gathered}[/tex]

Answer: 83.3g of solution must be added to 10g of KCl in order to prepare 12.0% (m/m) KCl solution.

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