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23 May, 00:50

If a solution of iodine and alcohol contains 4 ounces of iodine and 16 ounces of alcohol, how many ounces of alcohol need to evaporate so that the ratio of iodine to the solution is 2 to 3?

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  1. 23 May, 02:45
    0
    14 ounces

    Step-by-step explanation:

    Iodine quantity + alcohol quantity = solution quantity

    4 + 16 = 20

    Initial ratio of the iodine: alcohol : solution = 4:16:20

    Therefore to get the solution to be in ratio (2:Unknown:3)

    then the Alcohol must evaporate to

    Solution quantity - iodine quantity

    3 - 2 = 1

    This implies that new ratio of the iodine: alcohol : solution = 2:1:3

    However since iodine does not evaporate the ratio will be (multiply all by 2)

    4:2:6

    Initial quantity of alcohol - new quantity of alcohol = evaporated quantity

    16ounces - 2 ounces = 14 ounces
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