Which two minerals make up the complex hydroxyapatite?
2 answers:
Ca₁₀(PO₄)₆(OH)₂ - hydroxyapatite
b. phosphorus (P) and calcium (Ca)
Phosphorus and calcium is the correct answer.
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Answer:
there are 6 significant figures in 107.051
Answer:
7 hours
Explanation: step 1. 160x4=640
step 2. 1180-640=540
step 3. 540÷180=3
step 4. 3+4=7
