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18 September, 02:59

What is the mass percent of sodium chloride in a solution in which 50 grams of NaCl is dissolved in 700 grams of water?

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  1. 18 September, 03:05
    0
    Moles of NaOH = 15.0 g NaOH *

    1

    mol NaOH

    40.00

    g NaOH

    = 0.375 mol NaOH

    Calculate the number of litres of solution present.

    Volume = 225 mL *

    1

    L

    1000

    mL

    = 0.225 L soln

    Divide the number of moles of solute by the number of litres of solution.

    Molarity =

    0.375

    mol

    0.225

    L

    = 1.67 mol/L
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