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Mass Percentage

If mole fract...

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If mole fraction of urea in aqueous solution is 0.1 then mass percentage of urea in the solution will be (molar mass of urea = 60 g mol–1)

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Q. Mass percentage of urea in aqueous solution is 30%.The molality of urea in the solution is:
(Mol. wt. of urea = 60 g mole

^{- 1}

)

Q. Calculate the molality and mole fraction of the solute in an aqueous solution containing 6 g of urea per 500 g of water (Mol. mass of urea = 60).

Q. The mole fraction of urea in an aqueous urea solution containing

900 g

0.05

. If the density of the solution is

1.2 g c m^{- 3}

, the molarity of urea solution is______
(Given data: Molar masses of urea and water are

60 g m o l^{- 1}

18 g m o l^{- 1}

, respectively.)

Q. Which solution is isotonic with

6

% W/V aqueous solution of urea?

[Mole mass of Urea

= 60 g m {m o l}^{- 1}

Q. Find mass % of 10 m of aqueous solution of urea. If molar mass of urea is 60 g/mol and density of solution is 1.2

g {c m}^{- 3}

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