63. Solving a chemistry problem
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- 37 задачка.rar (27.34 KB)
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63. Solving a chemistry problem
37. Three solutions of K2Cr2O7 are mixed: 300 ml of a solution containing 1.25 g of this salt, 400 ml of a 0.0405 M solution and 250 ml of 0.222 N. solution. The volume of the mixture was diluted with H2O to 1000 ml. Calculate the normal concentration of the resulting solution.
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