nickleoncio0705 nickleoncio0705

16-01-2018
Mathematics

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How much water should be added to 10 mL of 8% alcohol solution to reduce the concentration to 5%?

We should add ___ mL.

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748190877 748190877

16-01-2018

my answer is 6ml, we can assume that we added in Xml water, and the alcohol is unchanged, so we can get the equation: 0.8/(10+X)=5%, than we can get the X=6ml.

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