Question

Calculate the number of moles in $12.046\times {10}^{22}$ atoms of copper.

Answer 1

$Numberofmoles=\frac{No.ofatoms}{6.023\times {10}^{23}}$ (OR) $\frac{No.ofatoms}{AvogadroNumber}$

$=\frac{12.046\times {10}^{22}}{6.023\times {10}^{23}}$

$=0.2mole$