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19 November, 01:14

A bottle of rubbing alcohol is labeled 70% (v/v) how many milliliters of isopropyl alcohol are in a 400ml bottle of this solution?

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  1. 19 November, 01:21
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    The number of milliliters of isopropyl alcohol that are in a 400 ml bottle of this solution is 280 Ml

    calculation

    % V/V = volume of solute / volume of solution x 100

    Let the volume of solute be = y ml

    the volume of solution = 400 ml

    convert 70% to fraction = 70/100

    by substituting the value in the equation

    = y ml / 400 ml = 70/100

    by cross multiplication

    100y = 400 x70

    100y = 28000

    y = 280 ml
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