A law stating that equal volumes of gases at the same temperature and pressure contain equal numbers of molecules.
- 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.
- 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.
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Syllabification: A·vo·ga·dro's law
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