139. Solving a chemistry problem

3. Calculate the thickness of the diffuse ionic layer a on the surface of the plate at 300 K in an aqueous solution containing a mixture of two indifferent electrolytes (electrolyte concentrations are indicated in the table below). How many times will the value of a change if the solution is diluted 4 times with deionized water?
Electrolyte 1 NaCl
m1 mg / l 0.1
Electrolyte 2 Ba (NO3) 2
m1 mg / l 1.0