To aid in the prevention of tooth decay, it is recommended that drinking water contain 1.10 ppm fluoride (F-).

To aid in the prevention of tooth decay, it is recommended that drinking water contain 1.10 ppm fluoride (F-).

(a) How many grams of F- must be added to a cylindrical water reservoir having a diameter of 5.49 × 102 m and a depth of 73.47 m? (b) How many grams of sodium fluoride, NaF, contain this much fluoride?