Химия ОВР 1. 2H + Ca = CaH22. CuO + H = CuOH 3. H + S = H2S 4. H + O = H2O

Question

Химия ОВР

1. 2H + Ca = CaH2

2. CuO + H = CuOH

3. H + S = H2S

4. H + O = H2O

Answer 1

Са+Н2=СаН2. (Н2-галоген)
Н2+S=H2S
2CuO+H2=2CuOH
H2+O2=H2O