77. Solving a chemistry problem

10. Calculate the ionic strength of the solution obtained by mixing aqueous solutions of HCl, NaCl, BaCl2, the concentrations and volumes of which are given in the table.

Task: HCI (V=50 ml, C=1.5 mol/l); NaCl (V=5 ml, C=1.2 mol/l);
BaCl2 (V=20 ml; C=1.1 mol/l)
When calculating, remember that in the formula for calculating the ionic strength of a solution, you must know the concentrations of all ions in the prepared solution.