15. Calculate the percentage of phosphorus in:
(a) Calcium hydrogen phosphate Ca(H,PO 22
(b) Calcium phosphate Ca,(PO3)2
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Answer:
Molecular mass of Ca(H2Po4)2 is 234g
Atomic mass of phosphorus is 30g
Explanation: Percentage of phosphorus = (2×30 / 234) × 100 = 25.64%
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