62. Solving a chemistry problem

62. Solving a chemistry problem

9. What mass of BaCl2 is contained in 250.0 ml of the analyzed solution, if after adding 40.00 ml of 0.1020 M AgNO3 solution to 25.00 ml of this solution, the excess of the latter was titrated with 15 ml of 0.09800 M NH4SCN solution?

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