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CBSE Class 9 Answered

5 Define avogadro's number. Why is it also known as avagadro's constant?
Asked by rohan | 26 Nov, 2013, 05:15: PM
answered-by-expert Expert Answer

Avogadro’s number is defined as the number of constituent particles (atoms or molecules) present in one mole of a given substance. Its value is equal to 6.0225 × 1023. Avogadro’s number is represented by N0.

Avogadro’s number (N0) is the constant number (i.e. 6.022 x 1023) of particles present in 1 mole of any substance and hence is also termed as Avogadro’s constant. 

Answered by Karishma Kapoor | 27 Nov, 2013, 12:00: PM

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