The problem asks to find the volume percentage of ethanol in a solution made by dissolving 25 $cm^3$ of ethanol in 175 $cm^3$ of water. The final answer should be expressed as a percentage.

ArithmeticPercentageVolumeMixture Problems
2025/3/30

1. Problem Description

The problem asks to find the volume percentage of ethanol in a solution made by dissolving 25 cm3cm^3 of ethanol in 175 cm3cm^3 of water. The final answer should be expressed as a percentage.

2. Solution Steps

First, calculate the total volume of the solution.
Total volume = Volume of ethanol + Volume of water
Total volume = 25 cm3cm^3 + 175 cm3cm^3 = 200 cm3cm^3
Then, calculate the volume percentage of ethanol in the solution.
Volume percentage of ethanol = Volume of ethanolTotal volume of solution100\frac{Volume\ of\ ethanol}{Total\ volume\ of\ solution} * 100
Volume percentage of ethanol = 25 cm3200 cm3100\frac{25\ cm^3}{200\ cm^3} * 100
Volume percentage of ethanol = 25200100\frac{25}{200} * 100
Volume percentage of ethanol = 18100\frac{1}{8} * 100
Volume percentage of ethanol = 12.5 %

3. Final Answer

The volume percentage of ethanol in the solution is 12.5 %.

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