1. Fe2O3 + 6 HCl → 2 FeCl3 + 3 H2O
2. 4 NH3 + 5 O2 → 4 NO + 6 H2O
3. 3 Na2O + P2O5 → 2 Na3PO4
4. 2 H2S + 3 O2 → 2 SO2 + 2 H2O
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Answers & Comments
1. Fe2O3 + 6 HCl → 2 FeCl3 + 3 H2O
2. 4 NH3 + 5 O2 → 4 NO + 6 H2O
3. 3 Na2O + P2O5 → 2 Na3PO4
4. 2 H2S + 3 O2 → 2 SO2 + 2 H2O