A solution is prepared by dissolving a certain amount of solute in 500 g of water. The percentage by mass of a solute in solution is 2.38. Calculate the mass of solute.

11.27 g

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11.45 g

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14.23 g

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15.42 g

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Solution

The correct option is A 11.27 g

Let the weight of the solute be x
$\begin{matrix} 2.38 = \frac{x \times 100}{x + 500} 2.38 x + 1190 = 100 x x = \frac{1100}{97.62} = 11.27 mass of solute = 11.27 g \end{matrix}$

Hence option A is correct.

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