9. A weighing of 1.500 g of a substance containing chlorine was dissolved in a 100 ml volumetric flask. To 20.00 ml of the resulting solution was added 30.00 ml of 0.1000 M AgNO3 solution, the excess of which was titrated with 10.50 ml of 0.07000 M KCNS solution. Calculate ω(Cl) in the sample.
Answer: 23.42%.

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