Avogadro's law definition

  • noun:
    • The concept that equal volumes of most fumes under identical conditions of pressure and heat support the same quantity of molecules.
    • a fundamental conception, according to which, under similar conditions of temperature and pressure, all gases and vapors contain in the same volume the same number of ultimate molecules; -- so named after Avogadro, an Italian scientist. Sometimes called Ampère's law.
    • See law.
    • the principle that equal amounts of all of the fumes (given the same temperature and stress) contain equal amounts of molecules

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