Molality

Definition

Molality is a measure of the concentration of a solute in a solution, expressed as the number of moles of solute per kilogram of solvent.

Related terms

Molarity:

This is another way to express concentration, defined as the number of moles of solute per liter of solution.

Solute:

This is the substance that gets dissolved in a solution. In our analogy, it's the lemon juice.

Solvent:

This is what dissolves another substance to form a solution. In our analogy, it's the water.