1.

Dissolving `120g` of urea `(Mw = 60)` in `1000 g` of water gave a solution of density `1.15 g mL^(-1)`. The molarity of solution is:A. 1.78 MB. 2.00 MC. 2.05 MD. 2.22 M

Answer» Correct Answer - C
`m=(1000M)/(1000d-MMw)`
`(120)/(60)xx(1000)/(1000)=(1000M)/(1000xx1.5-M(60))`
`2.30xx1000-120M=1000M`
`M=(2.30xx1000)/(1120)=2.05`


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