Molarity is a measure of the concentration of a solute in a solution, or of any chemical species, in terms of amount of substance in a given volume. It is defined as the number of moles of solute per liter of solution.
The measure of how much solute is dissolved in a specific amount of solvent or solution.
The substance that is being dissolved in a solvent to create a solution.
The substance that dissolves another substance (solute) to form a solution.