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 Ă— 10-11.)
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Chemistry, 22.06.2019 15:50
How many moles of potassium hydroxide are needed to completely react with 2.94 moles of aluminum sulfate
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Chemistry, 22.06.2019 17:10
In which block of the periodic table is uranium (u) found? s blockd blockp blockf block
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Chemistry, 22.06.2019 20:30
Some familiar products contain some of the same types of atoms. for instance, the chemical formula for baking soda is nahco 3. the chemical formula for liquid bleach is naclo, and the chemical formula for table salt is nacl. which choice best describes why these three products have some of the same types of atoms in common?
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Chemistry, 23.06.2019 01:00
Substance 33°f 100°f peanut oil solid liquid margarine solid liquid chocolate chips solid liquid which conclusion fits the data in the table? a. heat chemically changes chocolate and margarine. b. all solids become liquid at 100°f. c. removing heat from a substance it to melt. d. matter may change shape when it is heated.
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The U. S. Public Health Service recommends the fluoridation of water as a means for preventing tooth...
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