<P> Molar concentration (also called molarity, amount concentration or substance concentration) is a measure of the concentration of a chemical species, in particular of a solute in a solution, in terms of amount of substance per unit volume of solution . In chemistry, the most commonly used unit for molarity is the number of moles per litre, having the unit symbol mol / L. A solution with a concentration of 1 mol / L is said to be 1 molar, commonly designated as 1 M . </P> <P> Molar concentration or molarity is most commonly expressed in units of moles of solute per litre of solution . For use in broader applications, it is defined as amount of substance of solute per unit volume of solution, or per unit volume available to the species, represented by lowercase c: </P>

What are the units for concentration in chemistry
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