State how many milligrams of naf should be added per gallon

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Reference no: EM13274621

A city's water supply is fluoridated by adding NaF. The desired concentration of F- is 1.6 ppm. How many milligrams of NaF should be added per gallon treated water if the water is already 0.2 ppm F- (1 gallon = 3.78 Liters)

Reference no: EM13274621

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