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Sodium Fluoride Is Added to Drinking Water in Some Municipalities

Question 10

Short Answer

Sodium fluoride is added to drinking water in some municipalities to protect teeth against cavities. The idea is to convert hydroxyapatite, Ca10(PO4)6(OH)2, into more stable fluorapatite, Ca10(PO4)6F2. What is the molarity of a 5.0 mg/L sodium fluoride solution?

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