If 32.3 grams of kcl are dissolved in 192 grams of water, what is the concentration of the solution in percent by mass?
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Ответ:
The concentration of the solution in percent by mass is 14.3%
Explanation:
Given:
Mass of KCl (solute) = 32.3 g
Mass of water (solvent) = 192 g
To determine:
Concentration of solution in % mass i,e. %(w/w)
Formula:
%w/w![= \frac{Mass\ of\ solute}{Total\ mass\ of\ solution } *100\\](/tpl/images/0136/0973/a9d25.png)
Total mass of solution = solute + solvent = 32.3 + 192 = 224.3 g
%w/w =![\frac{32}{224.3} *100 = 14.3%](/tpl/images/0136/0973/39cc1.png)
Ответ:
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