Avagadro’s Law: It is a gas law which states that the total number of
atoms/molecules of a gas (i.e. the amount of gaseous substance) is directly
proportional to the volume occupied by the gas at constant temperature and pressure.
Avogadro’s law is closely related to the ideal gas equation since it links temperature, pressure, volume, and amount of
substance for a given gas.Expansion and contraction
of the lung during the breathing cycle , puncture wheel of
bike acquire less surface area then air filled and filling gas in hydrogen
balloon are the best example of Avagadro’s law.
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