Question

120g of urea (mol mass = 60g/mol) is dissolved in 1000g of water having density 1.15g/ml.
Calculate the molarity of the solution.
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Answer 1

Answer:2.05

Explanation:

M= xd10/mm

M= (w/W ×100) × 10d/ mm

M= (120/1120 ×100)× 10 × 1.15/ 120= 2.05

where w= weight of solute

W = weight of solution

mm = molecular weight

x= weight by weight percentage