The molarity of urea in a solution prepared by dissolving 16 g of urea (MW = 60.0 g/mol)in 39 g of H₂O is ________ M. The density of the solution is 1.3 g/mL. A)0.11 B)3.7 C)6.8 D)6.3 E)0.16

Question

Quizplus · Accepted Answer

To find molarity, calculate moles of urea (16 g / 60 g/mol = 0.267 mol) and volume of solution (55 g / 1.3 g/mL = 42.31 mL = 0.04231 L). Molarity = 0.267 mol / 0.04231 L = 6.31 M.

The Molarity of Urea in a Solution Prepared by Dissolving