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
$13.88 \times 10^{-1}$
$13.88 \times 10^{-2}$
$13.88$
$13.88 \times 10^{-3}$
Correct Option: , 3
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