Find the molality of a solution of 6.0 g of urea (60 g/mol) dissolved in 250 g of water.
A0.1 m
B0.024 m
C0.4 m
D4.0 m
Answer & Solution
Correct answer: C. 0.4 m
6.0 g of urea is 0.1 mol, and 0.1 mol per 0.250 kg of water gives 0.4 mol/kg.
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