define avogadro constant?

Asked by  | 23rd Feb, 2012, 11:22: PM

Expert Answer:

The Avogadro constant (NA) is defined as the ratio of the number of constituent particles N (usually atoms or molecules) in a sample to the amount of substance n (in moles) i.e.

 NA = N/n

Or one can say it expresses the number of elementary entities present per mole of a substance and has the value 6.022 × 1023 mol?1.

Answered by  | 24th Feb, 2012, 10:55: AM

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