Question

what the average relative mass of chlorine?

Answer 1

chlorine from the 35Cl (75.78%) and 37Cl (24.22%). Method 2 (easier in practice): Multiply each percentage by the mass number. Add and then divide by 100. The resulting number is relative atomic mass of atoms of that element. Hope u liked it

Answer 2

The average relative mass of chlorine is 35.5