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Calculate the total ion molarity for each of the following solutions: (i) 400. mL of 0.240 M MgBr2  (ii) 3.00...

Calculate the total ion molarity for each of the following solutions:

(i) 400. mL of 0.240 M MgBr2 
(ii) 3.00 L of 0.0400 M Na2CrO4


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