Amedeo Avogadro (1776-1856)

Amedeo Avogadro
Was an Italian physicist.
He is famous for his gas law, known as Avogadro's law,
Which states that when each one of a set of identical glass jars is filled with a different Gas,
at the same temperature and pressure, they each contain the same number of molecules of gas.
To discover the actual number of molecules requires the use of Avogadro's number.
It is usually written as 6.0220 X 10²³ which is a short way of writing
602,200,000,000,000,000,000,000. This is about the number of molecules of any gas,
including AIR, that would be contained in 22.4 litres.

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