24. Solving a chemistry problem
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24. Solving a chemistry problem
9. How many grams of Na2S2O3 • 5H2O must be taken to prepare 0.5 l of a solution with a molar equivalent concentration of 0.1 mol/l?
S2O32- - … → S4O62-
a) 12.9000; b) 6.4500; c) 3.2750
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