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Hardness in water sampleis 300ppm. Caco3 then what is its molarity |
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Answer» Answer: HARDNESS is most commonly EXPRESSED as MILLIGRAMS of calcium carbonate equivalent PER litre. Water containing calcium carbonate at concentrations below 60 mg/l is generally CONSIDERED as soft; 60–120 mg/l, moderately hard; 120–180 mg/l, hard; and more than 180 mg/l, very hard (McGowan, 2000) |
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