Question

Calculate the number of atoms in the following $0.5$ mole molecules of chlorine.

Answer 1

$1$ mole of Chlorine atom contains $6.02\times {10}^{23}$ atoms

$0.5$ mole of Chlorine molecules contains $=0.5\times 6.02\times {10}^{23}$

$\Rightarrow 3.01\times {10}^{23}$ atoms