Question

A mole of any substance contains _______

(a) 6.022 x 10^26 particles

(b) 6.022 x 10^22 particles

(c) 6.022 x 10^23 particles

(d) 3.022 x 10^22 particles

This question was addressed to me at a job interview.

My question is taken from Mole Concept and Molar Masses in section Chemistry Basic Concepts of Chemistry – Class 11

Answer 1

Correct option is (c) 6.022 x 10^23 particles

The best I can explain: The answer is Avogadro’s number. One mole of any substance contains Avogadro’s number of particles. Avogadro number denoted by NA. Its value is 602213670000000000000000, also written as 6.022×10^23.