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7 December, 10:19

How many grams of solute are dissolved in 125.0 mL of 5.00 M NaCl (MM = 58.45) ?

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  1. 7 December, 13:07
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    Answer: 36.53g

    Explanation:

    First we need to find the amount of NaCl that dissolves in 1L of the solution that produced 5M of NaCl

    Molarity = 5M

    MM of NaCl = 58.45

    Molarity = Mass conc (g/L) / MM

    Mass conc. (g/L) of NaCl = Molarity x MM

    = 5 x 58.45 = 292.25g

    Next, we need to find the amount that will dissolve in 125mL (i. e 0.125L)

    From the calculations above,

    292.25g of NaCl dissolved in 1L

    Therefore Xg of NaCl will dissolve in 0.125L of the solution i. e

    Xg of NaCl = 292.25 x 0.125 = 36.53g.

    Therefore 36.53g of NaCl will dissolve in 125mL of the solution
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