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7 December, 11:45

Provided that the molar mass of a compound is 543.52 g/mol, how many mg do you need to add to 17 mL of solvent to yield a solution molarity of 3 M?

N. B. M = (mol/L)

Select one:

a. 10.66

b. 27719520.00

c. 27.72

d. 27719.52

e. 3079946.67

+3
Answers (1)
  1. 7 December, 13:37
    0
    27719.52 mg

    Explanation:

    From the question, we have;

    Volume as 17 ml or 0.017 L Molarity as 3 M Molar mass of a compound as 543.52 g/mol

    Required to determine the mass of the compound needed to make the solution.

    We know that;

    Molarity = Moles : Volume

    Therefore;

    Moles = Molarity * Volume

    Hence;

    Moles of the compound = 3 M * 0.017 L

    = 0.051 Moles

    But;

    Mass = Moles * Molar mass

    = 0.051 moles * 543.52 g/mol

    = 27.71952 g

    But, 1 g = 1000 mg

    Therefore;

    Mass (in mg) = 27719.52 mg
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