Ответ:
1) Ca+Cl2=CaCl2
2)Ca+O=CaO
3)CaO+H2O= Ca(OH)2
4)Ca(OH)2+H2SO4=CaSO4+2H2O
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Ответ:
1) Ca+Cl2=CaCl2
2)Ca+O=CaO
3)CaO+H2O= Ca(OH)2
4)Ca(OH)2+H2SO4=CaSO4+2H2O