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An aqueous solution of 87 KOH is dissolved in 600 grams of solution. What is the...

An aqueous solution of 87 KOH is dissolved in 600 grams of solution. What is the concentration of the solution expressed as a percentage by mass.

a. 11 g/ml

b. 16%

c. 13 g/ml

d. 11%

science   Anatomy-And-Physiology   
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Answer #1

ANSWER :

Since, the mass of dissolved solute (KOH) is 87 grams and the mass of solvent is 600 grams, then the total mass of solution would be 687 grams (600 g + 87 g).

Now, we have to find concentration of solution as a percentage by mass via using the following formula :

Mass percentage (%) = (mass of dissolved solute / total mass of solution) × 100%

= (87 g / 687 g) × 100%

= 0.126 g × 100%

= 12.6%

  

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