How much water should be mixed with 20 ml of alcohol so as to obtain 20% alcohol solution.
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if 200% of water contain 20% alcohol the 40ml of alchohol will be present in water...
on the same way in 20ml of water contains 4ml of alchohol and 16ml of water should be added to the mixture to be 20% of alchohol....
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Answer:
Assuming it is 100% alcohol (and this is not really possible because alcohol absorbs water very rapidly), then ... Thus, you would have to add 80 ml of water to the 20 ml of 100% alcohol
Explanation:
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