What is the amount of solute per given amount of solvent?

Concentration

Explanation:

Concentration is measure of the quantity of solute present in a given amount of solvent. Concentration can be measured in mol/dm³, g/m³ and other forms like molality, parts per million.

Concentration in mol/dm³ (molarity) is a measure of the amount of moles of solute present in 1 dm³ of solvent while concentration in g/dm³ is the number of grams of solute present in 1 dm³ of solvent. These units of concentration can be converted to the other unit by using simple conversion methods.

molality refers to the amount of solute in 1 kg of solvent, while ppm is basically used for very dilute solutions.