91. The gas formed by alloying 12 g silica with an equi

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Uploaded: 04.06.2014
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91. The gas formed by alloying 12 g silica with an equimolar amount of potassium carbonate was passed through 100 ml of sodium hydroxide solution with a mass fraction of solute 10% (ρ = 1,11 g / ml). Calculate the weight of solid product after fusion. Which ingredients are present in the solution, which is passed through the gas? Calculate the quantities of substances in solution. Determine the weight of the solid residue, which can polu¬chit if said solution is first boiled, then carefully evaporated to dryness.

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Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)

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