*________ salts of calcium and magnesium are dissolved in hard water.
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Hard water, water that contains salts of calcium and magnesium principally as bicarbonates, chlorides, and sulfates.
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Hard Water
Hard water, water that contains salts of calcium and magnesium principally as bicarbonates, chlorides, and sulfates. Ferrous iron may also be present; oxidized to the ferric form, it appears as a reddish brown stain on washed fabrics and enameled surfaces.
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