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18 September, 16:02

You are given mixture made of 290 grams of water and 14.2 grams of salt. Determine the % by mass of salt in the salt solution.

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  1. 18 September, 16:19
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    Solution is 4.67% by mass of salt

    Explanation:

    % by mass is the concentration that defines the mass of solute in 100g of solution.

    In this case we have to find out the mass of solution with the data given:

    Mass of solution = Mass of solute + Mass of solvent

    Solute: Salt → 14.2 g

    Solvent: Water → 290 g

    Solution's mass = 14.2 g + 290g = 304.2 g

    % by mass = (mass of solute / mass of solution). 100

    (14.2 g / 304.2g). 100 = 4.67 %
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