The concentration of urea in a solution prepared by dissolving 16 g of urea in 20 g of H₂O is __________% by mass. The molar mass of urea is 60.0 g/mol. A)44 B)80 C)0.44 D)0.80 E)0.48

Name: The concentration of urea in a solution prepared by dissolving 16 g of urea in 20 g of H 2 O is __________% by mass. The molar mass of urea is 60.0 g/mol. A)44 B)80 C)0.44 D)0.80 E)0.48
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Quizplus · Accepted Answer

The mass percent of urea is calculated as (mass of urea / total mass of solution) * 100 = (16 g / (16 g + 20 g)) * 100 = 44%.

The Concentration of Urea in a Solution Prepared by Dissolving