Question

Cu CuO CuCl2 Cu(OH)2 CuO Cu

Answer 1

2Cu + O2 = 2CuO
CuO + 2HCl = CuCl2 + H2O
CuCl2 + 2Na(OH) = Cu(OH)2 + 2NaCl
Cu(OH)2 = CuO + H2O
CuO + Ca = CaO + Cu

Answer 2

Спасибо большое:)