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Solution

A solution co...

Question

A solution contains 20 g of sugar dissolved in 180 g of water. The concentration of this solution will be _____.

A

10 %

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B

9 %

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C

11 %

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D

12 %

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Solution

The correct option is A $10 %$
Concentration of a solution:

$m / m % = \frac{m a s s o f s o l u t e}{m a s s o f s o l u t i o n} \times 100$

Mass of solution = Mass of solute + Mass of solvent

= 20g + 180g
= 200 g

Concentration of a solution
$= \frac{20 g}{200 g} \times 100 = 10 %$

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