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Hydroxyapatite, Which Is a Component of Tooth Enamel, Is Very ×\times

Question 47

Multiple Choice

Hydroxyapatite, which is a component of tooth enamel, is very insoluble in water. For the following reaction, Ksp = 2.3 ×\times 10-59.  Hydroxyapatite, which is a component of tooth enamel, is very insoluble in water. For the following reaction, K<sub>sp</sub> = 2.3  \times  10<sup>-59</sup>.       What is the molar concentration of Ca<sub>5</sub>(PO<sub>4</sub>) <sub>3</sub><sup>+</sup> when the pH of the mouth is 4.0? A) 2.3  \times  10<sup>-49</sup> M B) 2.3  \times  10<sup>-59</sup> M C) 2.3  \times  10<sup>--55</sup> M D) 2.3  \times  10<sup>-63</sup> M E) 0, teeth don't dissolve!  Hydroxyapatite, which is a component of tooth enamel, is very insoluble in water. For the following reaction, K<sub>sp</sub> = 2.3  \times  10<sup>-59</sup>.       What is the molar concentration of Ca<sub>5</sub>(PO<sub>4</sub>) <sub>3</sub><sup>+</sup> when the pH of the mouth is 4.0? A) 2.3  \times  10<sup>-49</sup> M B) 2.3  \times  10<sup>-59</sup> M C) 2.3  \times  10<sup>--55</sup> M D) 2.3  \times  10<sup>-63</sup> M E) 0, teeth don't dissolve!  Hydroxyapatite, which is a component of tooth enamel, is very insoluble in water. For the following reaction, K<sub>sp</sub> = 2.3  \times  10<sup>-59</sup>.       What is the molar concentration of Ca<sub>5</sub>(PO<sub>4</sub>) <sub>3</sub><sup>+</sup> when the pH of the mouth is 4.0? A) 2.3  \times  10<sup>-49</sup> M B) 2.3  \times  10<sup>-59</sup> M C) 2.3  \times  10<sup>--55</sup> M D) 2.3  \times  10<sup>-63</sup> M E) 0, teeth don't dissolve! What is the molar concentration of Ca5(PO4) 3+ when the pH of the mouth is 4.0?


A) 2.3 ×\times 10-49 M
B) 2.3 ×\times 10-59 M
C) 2.3 ×\times 10--55 M
D) 2.3 ×\times 10-63 M
E) 0, teeth don't dissolve!

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