Объяснение:
FeS+2HCl=FeCl2+H2S
2Cu2O+O2=4CuO
4HNO3-> 4NO2+2H2O+O2
Al2O3+3H2SO4=Al2(SO4)3+3H2O
Pb(NO3)2+2KI=PbI2+2KNO3
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Объяснение:
FeS+2HCl=FeCl2+H2S
2Cu2O+O2=4CuO
4HNO3-> 4NO2+2H2O+O2
Al2O3+3H2SO4=Al2(SO4)3+3H2O
Pb(NO3)2+2KI=PbI2+2KNO3