What volume of ethyl alcohol and water must be mixed together to prepare 250 ml of 60% volume by volume solution of alcohol in water.

Dear student!
60% by volume of alcohol solution means, each 100 ml of solution will have 60 ml ethyl alcohol

So, 250 ml of solution will have = (60 /100) x250 = 150 ml of ethyl alcohol

Hence, In a 250 ml solution of 60% by volume of alcohol and water, alcohol should be 150 ml and water should be 100 ml.

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