Mole Fraction

In chemistry, the mole fraction is defined as the amount of a constituent divided by the total amount of all constituents in a mixture :

The sum of all the mole fractions is equal to 1:

The mole fraction is also called the amount fraction. It is identical to the number fraction, which is defined as the number of molecules of a constituent divided by the total number of all molecules . It is one way of expressing the composition of a mixture with a dimensionless quantity (mass fraction is another). The mole fraction is sometimes denoted by the lowercase Greek letter (chi) instead of a Roman . For mixtures of gases, IUPAC recommends the letter .

Read more about Mole Fraction:  Properties, Spatial Variation and Gradient

Famous quotes containing the words mole and/or fraction:

    The ignorance and darkness that is in us, no more hinders nor confines the knowledge that is in others, than the blindness of a mole is an argument against the quicksightedness of an eagle.
    John Locke (1632–1704)

    The visual is sorely undervalued in modern scholarship. Art history has attained only a fraction of the conceptual sophistication of literary criticism.... Drunk with self-love, criticism has hugely overestimated the centrality of language to western culture. It has failed to see the electrifying sign language of images.
    Camille Paglia (b. 1947)