Ca+S=CaS
Ca+2H2O=Ca(OH)2+H2
PbO+H2O=Pb(OH)2
Cu(OH)2=CuO+H2O
2H2O+3S=SO2+2H2S
PbO+Ca=CaO+Pb
PbO+H2=Pb+H2O
Pb+S=PbS
Cu(OH)2+H2=Cu + 2H2O
Cu+S=CuS
H2O=H2+O2 (электролиз воды)
2Сa+O2=2CaO
2Pb+O2=2PbO
2Cu+O2=2CuO
Ca+S=CaS
Ca+2H2O=Ca(OH)2+H2
PbO+H2O=Pb(OH)2
Cu(OH)2=CuO+H2O
2H2O+3S=SO2+2H2S
PbO+Ca=CaO+Pb
Ca+2H2O=Ca(OH)2+H2
Ca+S=CaS
PbO+H2=Pb+H2O
Pb+S=PbS
Cu(OH)2+H2=Cu + 2H2O
Cu+S=CuS
H2O=H2+O2 (электролиз воды)
2Сa+O2=2CaO
2Pb+O2=2PbO
2Cu+O2=2CuO