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1 November, 11:33

What mass of a 15.0% (m/m) naoh solution contains 125 g naoh?

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  1. 1 November, 11:58
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    The mass of 15.0 % (m/m) NaOH solution that contains 125 g NaOH is 833.33 g

    calculation

    m/m% = mass of solute / mass of solvent x 100

    M/M% = 15.0% into fraction = 15/100

    mass of solute (NaOH) = 125 g

    let the mass of solvent (NaOH solution) be represented by Y

    Therefore 15/100 = 125/Y

    by cross multiplication

    =15 x Y = 125 x 100

    15 y = 12500

    divide both side by 15

    y = 833.33 g
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