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Mathematics, 28.01.2020 13:40 alyssaarnold230
Dr. w needs 1600 ml of 70%-ethanol solution. he has two solutions of ethanol. solution a is 60% ethanol and solution b is 75% ethanol. how much of solution a and solution b does he need to mix together in order to get 1600 ml of 70%-ethanol solution?
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Dr. w needs 1600 ml of 70%-ethanol solution. he has two solutions of ethanol. solution a is 60% etha...
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