Explain : Avogadro.s Law.

Explanation

In 1811 Italian scientist Amedeo Avogadro tried to combine conclusions of Dalton.s atomic theory and Gay Lussac.s law of combining volumes which is now known as Avogadro law.
Avogadro.s Law : It states that equal volumes of all gases under the same conditions of temperature and pressure contain equal number of molecules.
Mathematically Formula : According to Avogadro.s Law as the temperature and pressure remain constant, the volume depends upon number of molecules of the gas or in other words amount of the gas.
`V prop n` (constant T and p) .....(Eq. -i)
where, n = The number of moles of the gas
`therefore V=k_(4)n " "` .....(Eq. -ii)
Molar volume at STP = 22.7 L
Atoms in one mole `= 6.022xx10^(23)`
The relation of volume and density of gas can be obtained by `M = k_(4)d`.