CBSE Class 9 Answered
How does Avogadro no. works?
Asked by gspublicschool | 19 Sep, 2018, 07:26: PM
Expert Answer
value of Avogadro’s number is approximately 6.022140857(74)×1023 mol−1. The definition of Avogadro’s number is that it tells us the number of particles in 1 mole (or mol) of a substance. These particles could be electrons or molecules or atoms. So, if you wanted to know the number of particles in 3 moles of a substance, the value would be
= 3 x 6.023 x 1023
= 1.81 x 1024 particles
we are able to convert between measurement in grams and the invisible unit of measurement of the atomic mass unit. And hence, this is the significance of Avogadro’s number.
Just like a dozen is 12 things, a mole is simply Avogadro's number of things. In chemistry, those "things" are atoms or molecules. So, Avogadro's No. is a conversion factor used in calculation of moles/particles.
Answered by Sumit Chakrapani | 19 Sep, 2018, 11:26: PM
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