Question

Calculate the weight of 3.491×10^19 of cl2

Answer 1

No. of moles= given atoms/Avogadro no.

$\frac{weight}{molar \: mass} = \frac{no.of \: particles}{avogadro \: no.} \\ \\ in \: this \: formua \: put \: value \: get \: answer$