Ответ:
CaO+H2SO4 = CaSO4+H2O
NaOH+HCl= NaCl+HG2O
Pb + 4HNO3 = Pb(NO3)2 + 2NO2 + 2H2O
K2O+CO2 = K2CO3
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Ответ:
CaO+H2SO4 = CaSO4+H2O
NaOH+HCl= NaCl+HG2O
Pb + 4HNO3 = Pb(NO3)2 + 2NO2 + 2H2O
K2O+CO2 = K2CO3