Answer: The molality of solution is 17.6 mole/kg
Explanation:
Molality of a solution is defined as the number of moles of solute dissolved per kg of the solvent.
[tex]Molarity=\frac{n}{W_s}[/tex]
where,
n = moles of solute
[tex]W_s[/tex] = weight of solvent in kg
moles of acetone (solute) = 0.241
moles of water (solvent )= (1-0.241) = 0.759
mass of water (solvent )= [tex]moles\times {\text {Molar Mass}}=0.759\times 18=13.7g=0.0137kg[/tex]
Now put all the given values in the formula of molality, we get
[tex]Molality=\frac{0.241}{0.0137kg}=17.6mole/kg[/tex]
Therefore, the molality of solution is 17.6 mole/kg
