Question

Molality is expressed as

Answer 1

Molality, also called molal concentration, is a measure of the concentration of a solute in a solution in terms of amount of substance in a specified amount of mass of the solvent. This contrasts with the definition of molarity which is based on a specified volume of solution.
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Answer 2

There are different ways to express the concentration of a solution, and one way is to express it in terms of molality. Molality, m, is the number of moles of solute per kilogram of solvent. The unit for molality is expressed as 'm,' or moles per kilogram.