Moles are used to measure elements. A moles is equal to the atomic mass of the molecule and is represented by the number 6.02 X 10^23. This mass is measured in grams. The mole was discovered by Amadeo Avogardo, an Italian physics professor, in 1811. Fifty years later an Italian scientiest used Avogardo's hypothesis to develop a set of atomic eights for the known elements. Then an Australian high school teacher calculated the size of a molecule of air. This developed an estimate for the number of molecules in a given volume of air. Moles are important in chemistry because they allow us the find the mass of any given element or compound.
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