Question

What’s the number of entities or particles together in mole concept known as?

(a) Boltzmann constant

(b) Avogadro’s number

(c) Universal gas constant

(d) Reynold’s number

I got this question in class test.

I need to ask this question from Mole Concept and Molar Masses in portion Chemistry Basic Concepts of Chemistry – Class 11

Answer 1

Correct choice is (b) Avogadro’s number

The explanation is: Avogadro number denoted by NA. Its value is 602213670000000000000000, also written as 6.022×10^23. It’s the number of entities in 1 mol of a substance. The units may be electrons, atoms, ions, or molecules, depending on the nature of the substance.