4P + 3O2 == 2P2O3
Mr(P2O3) = 31×2 + 16×3 = 110
W(P) = (31×2) : 110 × 100% = 56,36 %
W(O) = 100 - 56,36 = 43,64 %
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4P + 3O2 == 2P2O3
Mr(P2O3) = 31×2 + 16×3 = 110
W(P) = (31×2) : 110 × 100% = 56,36 %
W(O) = 100 - 56,36 = 43,64 %