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1. A domestic water softener produces water with hardness of 5 mg/L as CaCO3. The raw water has hardness of 225 mg/L. The average finished

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1. A domestic water softener produces water with hardness of 5 mg/L as CaCO3. The raw water has hardness of 225 mg/L. The average finished water demand is 1600 gpd with hardness of 80 mg/L as CaCO3. Determine the flow through water softener. [3 marks]

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