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It is recommended that drinking water contain 1.6 ppm of fluoride. If the local reservoir has...

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Chemistry

It is recommended that drinking water contain 1.6 ppm offluoride. If the local reservoir has a diameter of 450.0 m and adepth of 10.0 m (V= Pi*r2 *h), how many grams of Fshould be added to the water in the reservoir to give therecommended concentration? If fluoride is provided by hydrogenhexafluorosilicate (H2SiF6), how many grams of H2SiF6 containFluoride?

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