26. Solving a chemistry problem
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26. Solving a chemistry problem
33. To determine sulfur, a sample of 2.0 g of ore containing about 20% sulfur was fused with sodium peroxide. The melt was dissolved in 200 ml of water. How many milliliters of 0.25 M barium chloride will be required to precipitate sulfur in the form of barium sulfate from 20 ml of the resulting solution at a stoichiometric ratio of reactants?
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