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14 November, 10:02

how much of other chemicals must be evaporated from 400grams of a hand sanitizer that is 24% alcohol to strengthen it to a hand sanitizer that is 30% alcohol? correct your answer to the nearest whole number

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  1. 14 November, 13:23
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    80 grams

    Step-by-step explanation:

    Weight of 24% solution = 400 grams

    Alcohol content = 24%

    Amount of alcohol = 400*0.24 = 96 grams

    Weight of 30% solution with same amount of alcohol:

    96/0.3 = 320 grams

    The difference in weights is the other chemicals evaporated:

    400-320=80 grams
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