What is Avagadros Number pls explain in detail and also with gram atomic mass

Dear student,

Avogadro's constant or Avogadro's number is defined as the number of particles present in one mole of a substance and is equal to 6.022 X 1023. The number 6.022 × 10 23 is an experimentally obtained value and is named after the Italian scientist, Amedeo Avogadro. Thus one mole of a substance will always consist of 6.022 × 10 23 particles of that substance. For example, one-mole carbon contains 6.022 × 10 23 atoms of carbon, one mole of H2O contains 6.022 × 10 23 molecules of H2O. 

Gram atomic mass is the mass in grams of one mole of atoms in a monoatomic chemical element.
1 mole = 6.023 × 1023 atoms or molecules (Avogadro’s number) will equal the molecular mass expressed in grams.

For example:

 1mole of hydrogen = 1 gram (gram atomic mass)
1 mole of water (H2O) = 18 grams (gram atomic mass)

Regards


 

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Avogadro's numbernumber of units in one mole of any substance (defined as its molecular weight in grams), equal to 6.02214076 × 1023. The units may be electrons, atoms, ions, or molecules, depending on the nature of the substance.
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