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Concentration of Solutions
a measure of the amount of solute in a
given amount of solvent or solution
Percent by Mass
Percent by Volume
Percent by Mass-Volume
Mole fraction
Molality
Molarity
Parts per million
Ways to express concentrations of solution

Percent by Mass (% w/w)

Percent by Volume (% v/v)
Involves the volume of both the solute and the solution.

Percent by mass-volume (%w/v)

Mole Fraction
It is the ratio of the number of moles of one component to the total number of moles in a solution

Molality (m)
The number of moles of a solute per kilogram of solvent.