Ответ:
1) 4Na+O2=2Na2O
Na2O+H2O=2NaOH
NaOH+HCl=NaCl+H2O
2) 2Ca+O2=2CaO
CaO+H2O=Ca(OH)2
Ca(OH)2+2HNO3=Ca(NO3)2+2H2O
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Ответ:
1) 4Na+O2=2Na2O
Na2O+H2O=2NaOH
NaOH+HCl=NaCl+H2O
2) 2Ca+O2=2CaO
CaO+H2O=Ca(OH)2
Ca(OH)2+2HNO3=Ca(NO3)2+2H2O