On This Day In Chemistry

July 9th

Italian scientist Amedeo Avogadro died on this day in 1856

His hypothesis – now known as Avogadro’s Law – states that equal volumes of gases at a given temperature and pressure contain the same number of molecules. This is now widely accepted, and the number of molecules in a mole is referred to as Avogadro’s number, 6.023 x 1023.
 

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