Not much is known about Avogadro's private life. He had six children and was reputed to be a religious man and also a discreet lady's man. Some historical accounts indicate that Avogadro sponsored and aided Sardinians planning a revolution on that island, stopped by the concession of Charles Albert's modern Constitution (Statuto Albertino). Because of his alleged political actions, Avogadro was removed as professor at Turin University (officially, the University was "very glad to allow this interesting scientist to take a rest from heavy teaching duties, in order to be able to give a better attention to his researches"). However, doubts remain as to the nature of Avogadro's association with the Sardinians. In any case, increasing acceptance of both revolutionary ideas and Avogadro's work led to his reinstatement at Turin University in 1833. Avogadro introduced the decimal system in Piedmont and served as a member of the Royal Superior Council on Public Instruction.
Avogadro's law states that equal volumes of gases, at the same temperature and pressure, contain the same number of molecules. Avogadro's hypothesis wasn't generally accepted until after 1858 (after Avogadro's death), when the Italian chemist Stanislao Cannizzaro was able to explain why there were some organic chemical exceptions to Avogadro's hypothesis. One of the most important contributions of Avogadro's work was his resolution of the confusion surrounding atoms and molecules (although he didn't use the term 'atom'). Avogadro believed that particles could be composed of molecules and that molecules could be composed of still simpler units, atoms.The number of molecules in a mole (one gram molecular weight) was termed Avogadro's number (sometimes called Avogadro's constant) in honor of Avogadro's theories. Avogadro's number has been experimentally determined to be 6.023x1023 molecules per gram-mole.