Mr(Са3(РО4)2) = 40 *3 + 31*2 + 16 * 8 = 310
W(Ca) = Ar(Ca) * n / Mr(Ca3(PO4)2) *100% = 40 * 1 / 310 *100% = 12,9%
W(P) = Ar(P) * n / Mr(Ca3(PO4)2) *100% = 31 * 2 / 310 *100% = 20%
W(O) = Ar(O) * n / Mr(Ca3(PO4)2) *100% = 16 * 8 / 310 * 100% = 41,3%
n(Ca3(PO4)2) = m(Ca3(PO4)2) / Mr(Ca3(PO4)2) = 24 / 310 = 0,08 моль
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Mr(Са3(РО4)2) = 40 *3 + 31*2 + 16 * 8 = 310
W(Ca) = Ar(Ca) * n / Mr(Ca3(PO4)2) *100% = 40 * 1 / 310 *100% = 12,9%
W(P) = Ar(P) * n / Mr(Ca3(PO4)2) *100% = 31 * 2 / 310 *100% = 20%
W(O) = Ar(O) * n / Mr(Ca3(PO4)2) *100% = 16 * 8 / 310 * 100% = 41,3%
n(Ca3(PO4)2) = m(Ca3(PO4)2) / Mr(Ca3(PO4)2) = 24 / 310 = 0,08 моль