Other Expressions of Concentration
mass percent (% w/w) = mass solute / mass of solution x 100
(related to parts per million (ppm) or parts per billion (ppb))
volume percent (% (v/v) = volume solute / volume of solution x 100
% (w/v) = solute mass / solution volume x 100
mole percent (mol%) = mole fraction x 100
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