Ответ:
2Cu+O2=2CuO+4HCl=2CuCl2+2H2O
2Ca+O2=2CaO+2H2O=2Ca(OH)2
2S+2O2=2SO2+O2=2SO3+2H2O=2H2SO4
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Ответ:
2Cu+O2=2CuO+4HCl=2CuCl2+2H2O
2Ca+O2=2CaO+2H2O=2Ca(OH)2
2S+2O2=2SO2+O2=2SO3+2H2O=2H2SO4