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Write short notes on Avogadro’s Hypothesis and its applications.

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Avogadro’s-Hypothesis and its applications:

In 1811, Italian physicist and mathematician Anedeo Avogadro published a hypothesis (also termed Avogadro’s law or principle) states that the volume of a gas is directly proportional to the number of molecules of the gas. This is represented by the formula ,
V = aN,
where a is a constant, V is the volume of the gas, and N is the number of gas molecules.
Applications
Avogadro’s law has been useful in substantiating a number of important laws and concepts. It has helped in the following areas:

(i) In explaining Gay Lussac’s law of gaseous volumes.

(ii) In determining the atomicity of gases.

(iii) In determining the molecular formula of a gas.

(iv) In establishing the relationship between relative molecular mass and vapour density.

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