Объяснение:
2HgO = 2Hg + O2↑
2Mg + O2 = 2MgO
4P + 3O2 = 2P2O3
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Объяснение:
2HgO = 2Hg + O2↑
2Mg + O2 = 2MgO
4P + 3O2 = 2P2O3