Calculate the mass percent of calcium, phosphorus and oxygen in calcium phosphate Ca3(PO4)2.


The molar mass of Ca3(PO4)2 is 40x3 + (31 + 16x4) x 2 = 310.

The mass percent is calculated by


Mass % of Ca = x 100 = 38.71%


Mass % of P = x 100 = 20%


Mass % of O = x 100 = 41.29%


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