Ответ:
1)2Ca+O2→2CaO
2)CaO+H2O→Ca(OH)2
3)Ca(OH)2+H2SO4→CaSO4+2H2O
4)Ca+2HCl→CaCl2+H2↑
5) CaO+2HNO3→Ca(NO3)2+H2O
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Ответ:
1)2Ca+O2→2CaO
2)CaO+H2O→Ca(OH)2
3)Ca(OH)2+H2SO4→CaSO4+2H2O
4)Ca+2HCl→CaCl2+H2↑
5) CaO+2HNO3→Ca(NO3)2+H2O