Ответ:
2Ai + 3S → Ai2S3
2HgO → 2Hg + O2
4Zi + O2 → 2Zi2O
2Cr(OH)3 → Cr2O3 + 3H2O
2H2S + 3O2 → 2SO2 + 2H2O
2Na + 2H2O → 2NaOH + H2
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Ответ:
2Ai + 3S → Ai2S3
2HgO → 2Hg + O2
4Zi + O2 → 2Zi2O
2Cr(OH)3 → Cr2O3 + 3H2O
2H2S + 3O2 → 2SO2 + 2H2O
2Na + 2H2O → 2NaOH + H2