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A law stating that equal volumes of gases at the same temperature and pressure contain equal numbers of molecules.
‘This is the basic theory behind Avogadro's law.’
‘This hypothesis lead to Avogadro's law, which states that the volume of a gas maintained at constant temperature and pressure, is directly proportional to the number of moles of the gas.’
‘The next of the gas laws is known as Avogadro's law.’
‘Amedeo Avogadro was an Italian physicist who lived from 1776-1856, and his main contribution to chemistry is Avogadro's hypothesis which gave us Avogadro's Law, which in turn lead to Avogadro's number.’
‘It also predicted Avogadro's law that equal volumes of gases contain equal numbers of molecules and so explained Gay Lussac's law also.’
‘The H 2 O formula for water - derived using Avogadro's hypothesis - implied that oxygen's atomic weight was 16.’