Chemistry, 20.03.2020 04:26 korar1644

The U. S. Public Health Service recommends the fluoridation of water as a means for preventing tooth decay. The recommended concentration is 1.0 mg F per liter. The presence of calcium ions in hard water can precipitate the added fluoride. What m molarity of calcium is at the USPHS recommended level? (Ksp for CaF2 is 4.0 × 10-11.)

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The U. S. Public Health Service recommends the fluoridation of water as a means for preventing tooth...