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21 October, 13:15

What is the percent by volume of ethanol (C2H60 or ethyl alcohol) in the final solution when 45 mL of ethanol is diluted to a volume of 250 mL with water?

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  1. 21 October, 13:43
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    Percent by volume = 18%

    Explanation:

    Given dа ta:

    Volume of ethanol = 45 mL

    Volume of solution = 250 mL

    Solution:

    In given problem there is 45 mL of solute while volume of Solvent is,

    250 mL - 45 mL = 205 mL

    The volume of solution (solvent + solute) = 250 mL

    The percent by volume is calculated through following formula:

    Percent by volume = Volume of solute / Volume of solution * 100

    Percent by volume = 45 mL / 250 mL * 100

    Percent by volume = 0.18 * 100

    Percent by volume = 18%
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