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3 February, 15:36

Determine the number of grams of NaCl necessary to make up 100 mL of a 0.10 M solution.

0.017 g

0.58 g

1.7 g

58 g

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Answers (1)
  1. 3 February, 16:03
    0
    Molarity is obtained by dividing the number of moles by the volume of the solution in liters. Therefore, the number of moles is the product of molarity and volume.

    n = (100 mL) x (1 L / 1000 mL) x (0.10 M) = 0.01 moles

    Multiply this value with the molar mass of NaCl to obtain the amount of substance in mass,

    m = (0.01 moles) x (58.45 g / mol) = 0.5845 g
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