molality
chemistry
Quick Summary
Molality (m) is a unit used to express the composition of a solution, particularly in electrolyte solutions. It is defined as the number of moles of solute per 1,000 grams of solvent. This measure is useful because it is proportional to the number of undissociated solute molecules or ions in a given amount of solvent. The term "molal" itself means containing one mole of solute per 1,000 grams of solvent. Molality is distinct from molarity, which is based on the volume of the solution.12
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