The molality of the ethanol in the solution is 3.70 mol/kg
The molality of a solution relates to the required amount of substance that is soluble in a given mass of a solvent.
From the given information:
The number of moles of ethanol is:
= 2.61 g/46.07 g/mol
= 0.06 mol of ethanol
There are 1000 g in 1 kg of water. In 16.2 g of water, there is 0.0162 kg of water.
Therefore, the molality of ethanol is:
[tex]\mathbf{=\dfrac{0.06 \ mol }{0.0162 \ kg }}[/tex]
= 3.70 mol/kg
Learn more about molality here:
https://brainly.com/question/9149034
