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An aqueous solution of urea containing 18 ~g urea in 1500 ~cm ³ of the solution has a density equal to 1.052 . If the molecular weight of urea is 60, the molality of the solution is

Options

  1. A0.200
  2. B0.192
  3. C0.100
  4. D1.200

Correct answer

B. 0.192

Step-by-step solution

1500 cc . solution =1500 1.052 ~g =1578 ~g Weight of solvent =1560 ~g Weight of solute =18 ~g Molality = weight of solute molecular weight of solute weight of solvent in kg = 18 1000 60 1560 =0.192 ~m

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