Determining mass of calcium phosphate, calcium, phosphorus and oxygen
Molar mass of Ca3(PO4)2=(3∗40)+(31∗2)+(16∗8)=310 g/mol
Molar mass of Calcium(Ca) = 40 g/mol
Molar mass of phosphorus(P) = 31 g/mol
Molar mass of Oxygen(O) = 16 g/mol
Calculating mass percent for Ca, P and O
Total mass of calcium present in 1 mole of Ca3(PO4)2=3×40=120g
Total mass of Phosphorus present in 1 mole of Ca3(PO4)2=2×31=62g
Total mass of Oxygen present in 1 mole of Ca3(PO4)2=8×16=128g
Mass percentage = Mass of component(g)Mass of Ca3(PO4)2 (g)×100
Mass percent of Ca = (120310)×100 = 38.71%
Mass percent of P = (62310)×100 = 20%
Mass percent of O = (128310)×100 = 41.29%
Hence, mass percent of calcium, phosphorus and oxygen in Ca3(PO4)2 are 38.71%, 20% and 41.29% respectively.