113. Solving a chemistry problem
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Product description
In fresh water intended for water supply, the concentration of calcium ions is 2.2⋅10–3 mol/l, and the concentration of bicarbonate ion is 1.3⋅10–3 mol/l. What amounts of calcium hydroxide and sodium carbonate are needed to reduce the level of calcium ions by a factor of four if 1⋅107 l of water is to be prepared.
Additional information
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