75 atoms have a mass number of 35, and 25 atoms have a mass number of 37. To calculate the relative atomic mass, A r, of chlorine: \(A_{r} = \frac{total~mass~of~atoms}{total~number~of~atoms} ...

75 atoms have a mass number of 35, and 25 atoms have a mass number of 37. To calculate the relative atomic mass, A r, of chlorine: \(\textit{A}_\textup{r}=\frac{total~mass~of~atoms}{total~number ...