Se dau urmatoarele scheme de reacti:
Mg2SO4+O2-->MgO
Na2SO4+BaCl2-->BaSO4+NaCl
KOH+H2SO4-->K2SO4+H2O
NaCl+AgNO3-->AgCl+NaNO3
MgCO3-->MgO+CO2
Mg+HCl-->MgCl2+H2
Stabiliti coeficientii acestor ecuatii chimice.precizati tipul reactiilor.
Am nevoie urgent dau funda