What is Molality? It is a measure of solute concentration in a solution.Learn about Molality, Molarity & the difference between Molarity & Molality @Byju's.
The ratio of the moles of a solute to the total litres of a solution is known as molarity. Both the solute and the solvent are present in the solution. Molality, on the contrary, is the ratio of a solute’s moles to a solvent’s kilograms. ...
which you find from looking up the atomic mass of chlorine on the periodic table and noting there is only 1 Cl ion per NaCl molecule. The mass of sodium doesn't come into play since we're only looking at chloride ions for this problem. So, you now have the relation: ...