Ответ:
1)2HgO=2Hg+O2
2)O2+2Ca=2CaO
3)CaO+H2O=Ca2(OH)2
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Ответ:
1)2HgO=2Hg+O2
2)O2+2Ca=2CaO
3)CaO+H2O=Ca2(OH)2