Question

Calculate the number of particles in i) 23 grams of Na atom [Atomic mass of Na= 23u] ii) 0.2 mole of Carbon atom.

Answer 1

Answer:

23gm Na i.e. 1 mole Na=6.022×10^23 atoms

0.2 mole C=0.2×6.022×10^23

=1.2×10^23 atoms