Ответ:
2Ca+O2= 2CaO
CaO+ H2O= Ca(OH)2
Ca(OH)2+2 NaCl=CaCl2+2NaOH
CaCl2+H2SO4= CaSO4+2HCl
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Ответ:
2Ca+O2= 2CaO
CaO+ H2O= Ca(OH)2
Ca(OH)2+2 NaCl=CaCl2+2NaOH
CaCl2+H2SO4= CaSO4+2HCl