Question

60 g of urea is dissolved in 90 g of water. Then the mole fraction of solute is

Answer 1

Explanation:

no. of moles of urea = 60/60 = 1 mol

no. of moles of water = 90/18 = 5 mol

mole fraction of solute(urea) = 1/(1+5) =1/6 =0.66

Answer 2

Explanation:

No.of moles of urea = 60/60 = 1 mol

No.of moles of water = 90/18 = 5 mol

Mole fraction of solute ( urea ) = 1/(1+5)= 1/6

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