Question

12. A drinking water treatment plant adds fluorine at a concentration of 0.0001%. Theaverage daily water demand is 18 million gal. How much fluorine must the communitypurchase? (Note: (1lbm/mg) =

8.34 (L/million gallons)). a. 150 lbm/day b. 250 lbm/day c. 2.16 lbm/day d. 0.46 lbm/day

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