Объяснение:
1) 2Mg+O2=2MgO
MgO+2HCl=MgCl2+H2O
MgCl2+Na2CO3=MgCO3+2NaCl
MgCO3+2HNO3=Mg(NO3)2+CO2+H2O
2) S+O2=SO2
SO2+Na2O=Na2SO3
Na2SO3+BaCl2=BaSO3+2NaCl
BaSO3+2HCl=BaCl2+SO2+H2O
3) 2Na+2H2O=2NaOH+H2
2NaOH+H2SO4=Na2SO4+2H2O
Na2SO4+BaCl2=BaSO4+2NaCl
NaCl+AgNO3=NaNO3+AgCl
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Answers & Comments
Объяснение:
1) 2Mg+O2=2MgO
MgO+2HCl=MgCl2+H2O
MgCl2+Na2CO3=MgCO3+2NaCl
MgCO3+2HNO3=Mg(NO3)2+CO2+H2O
2) S+O2=SO2
SO2+Na2O=Na2SO3
Na2SO3+BaCl2=BaSO3+2NaCl
BaSO3+2HCl=BaCl2+SO2+H2O
3) 2Na+2H2O=2NaOH+H2
2NaOH+H2SO4=Na2SO4+2H2O
Na2SO4+BaCl2=BaSO4+2NaCl
NaCl+AgNO3=NaNO3+AgCl