Question

сделайте пожалуйста
2Cu + O2 =
CuO + H2SO4 =
CaCO3 + 3HCl =
Na2SO4 + BaCl2 =

Answer 1

2Cu+O2=2CuO
CuO+H2SO4=CuSO4+H2O
CaCO3+2HCl=CaCl2+H2O+CO2
Na2SO4+BaCl2=2NaCl+BaSO4

Answer 2

1. CuO
2. CuSO4 + H2O
3. CaCl2 + H2CO3
4. NaCl + BaSO4