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Avogadro's law is a gas law discovered by Amedeo Avogadro, dictates that the number of molecules in a specific volume of gas is dependent on its pressure and temperature.The law has three facets:
- The amount of moles is directly proportional to the gas' volume
- The amount of moles is proportional to its pressure
- The amount of moles is inversely proportional to its temperature
Multiply all that by a constant to make an equality instead of a proportion and you get:
-
Where R is equal to 8.21 (kPa × L)/(K × mol), and n represents one mole.
One mole occupies approximately 22.4 Liters at STP.
The number of molecules in one mole is called Avogadro's number.
Thermodynamics
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