1. 2Ca+O2=2CaO
2. CaO+2HCl=CaCl2+H2O
3. CaCl2+2AgNO3=2AgCl+Ca(NO3)2
4. Ca+2H2O=Ca(OH)2+H2
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Answers & Comments
1. 2Ca+O2=2CaO
2. CaO+2HCl=CaCl2+H2O
3. CaCl2+2AgNO3=2AgCl+Ca(NO3)2
4. Ca+2H2O=Ca(OH)2+H2