Scienze e Viaggi

AVOGADRO

Avogadro was born at Turin on 1776, dead in 1856, Italian physicist and
chemist, mostly famous to formulation of Avogadro's law .

After a jurisprudence degree, he studied mathematics and physics and on 1809 he begun teacher in mathematics and physics in the royal College in Vercelli.

On 1814 he taught physics inside the Turin's University, until its death.

Its first researches are around electrophysics and around the relationships between chemical and electrical properties of the matter.

After its studies on gases in the 1811, he advanced the law in that equal volumes of different gases, in the same conditions of temperature and pressure, contain the same number of molecules.

This law involves fundamental concepts of the modern chemistry, like the distinction between atoms and molecules and the possibility to determine the molecular weights of gases, using a sample.

This law was accepted only in the 1860.

The number of molecules that are content in a "mole" is called "Avogadro's number". A "mole" is a chemical amount, characteristic in every substance.