V 2 30 L. Derivation of Avogadros Law. Avogadros Law Avogadro S Law Chemistry Classroom Easy Science One can express Avogadros law by the following mathematical equation. . According to Avogadros law the quantity of moles in a gas and its volume are directly proportional under conditions of constant pressure and temperature. Vini VfnfWhereVi initial volumeni initial number of molesVf final volumenf final number of moles. This link can be described mathematically as follows. In other words the number of molecules of any gas in the volume of 2241 l will be the same for both light and heavy gases. Over time this relationship was supported by many experimental observations as expressed by Avogadros law. Avogadros Law states that equal volumes of all gases contain similar numbers of molecules if kept under the same conditions of temperature and pressure. Dividing both sides of Equation 621 by V instead of P giv...
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