Calculate the mass fraction of phosphorus in its oxide.
| December 6, 2020 | education
Phosphorus oxide – P2O5;
Mr (P2O5) = 2Ar (P) + 5Ar (O);
W (P) = 2Ar (P) * 100 / (2Ar (P) + 5Ar (O)) = 2 * 31 * 100 / (2 * 31 + 5 * 16) ≈ 44%.
Answer: 44% is phosphorus in P2O5.
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