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The mole fraction of a solvent in aqueous solution of a solute is 0.8. The molality (in mol kg –1 ) of the aqueous solution is :

1. 13.88 × 10 –1
2. 13.88 × 10 –3
3. 13.88
4. 13.88 × 10 –2

Correct answer: 13.88

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