Question:
10 g of alcohol is dissolved in 90 g of water. The percentage of alcohol in the solution is
10 g of alcohol is dissolved in 90 g of water. The percentage of alcohol in the solution is
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To find the percentage of a component in a solution, divide the mass of that component by the total mass of the solution and multiply by 100.
Updated On: Mar 6, 2025
- 10\(\% \)
- 90\(\% \)
- 20\(\% \)
- 100\(\% \)
- 1\(\% \)
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The Correct Option is A
Solution and Explanation
The percentage of alcohol in the solution is given by:
\[
{Percentage of alcohol} = \frac{{Mass of alcohol}}{{Total mass of solution}} \times 100
\]
The total mass of the solution is \( 10 \, {g} + 90 \, {g} = 100 \, {g} \). Therefore:
\[
{Percentage of alcohol} = \frac{10}{100} \times 100 = 10\%
\]
Thus, the correct answer is (A).
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