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

We should add ___ mL.

Question

Chloe Pratt

Mathematics

16 November, 01:17

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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Answers (1)

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Humberto Villa · Answer 1

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.

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

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

We should add ___ mL.