Fluoride ion is poisonous in relatively low amounts: 0.2 g of f - per 70 kg body weight can cause death. nevertheless, in order to prevent tooth decay, f - ions are added to drinking water at a concentration of 1 mg of f - ion per l of water. how many liters of fluoridated drinking water would a 70 kg person have to consume in one day to reach this toxic level?
l
how many kilograms of sodium fluoride would be needed to treat a 7.75 107 gal reservoir?
kg
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