Ответ:
Cu.
2Cu+O2=2CuO
CuO+H2SO4=CuSO4+H2O
CuSO4+Ca(OH)2=Cu(OH)2+CaSO4
Cu(OH)2+2LiBr=CuBr2+2LiOH.
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Ответ:
Cu.
2Cu+O2=2CuO
CuO+H2SO4=CuSO4+H2O
CuSO4+Ca(OH)2=Cu(OH)2+CaSO4
Cu(OH)2+2LiBr=CuBr2+2LiOH.