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CBSE Class 11-science Answered

avogadro no.??
Asked by keshrivishalbkm9122 | 08 May, 2020, 09:35: AM
Expert Answer
Avogadro's Number:
 
Avogadro experimentally found that one mole of any substance always contained 6.022 × 1023 particles.
This number is called the Avogadro’s number, denoted by N0.
 
1 mole of a substance is equal to 6.022 × 1023 particles i.e. atoms, molecules or ions of the substance.
 
For Example, How many molecules will be present in 2 grams of hydrogen gas (H2)?
1 mole of hydrogen molecules = molecular mass of hydrogen = 2 grams
 
We know that 1 mole of hydrogen molecules contains 6.022 × 1023 hydrogen molecules.
 
2 grams of hydrogen gas will also contain 6.022 × 1023 hydrogen molecules.
 
1 mole (of anything) = 6.022 × 1023 in number
Answered by Varsha | 08 May, 2020, 12:31: PM
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