28. Solving a chemistry problem
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4. What is the purpose of obtaining sodium hexafluorosilicate in large quantities? What substances are required to obtain this product? Write the equations for the reactions that are carried out when obtaining Na2SiF6 from sand and fluorite. Calculate the masses of sand (98% SiO2) and fluorite (94% CaF2) required to produce one tonne of sodium hexafluorosilicate.
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