October 2021 0 3 Report
CuO + H2 = Cu +... AL + HCl = AlCl3 +...
H2 + O2 =...
... +O2 =CuO
S+... =SO2
CuS+... =SO2+...
WO3+... =W+...
Na2O+H2O=...
Zn+H2SO4=...
N2+... =NH3
H2+FeO=...
Na2O+... =NaOH
Zn+... =ZnSO4+...
V2O5+H2=...
Ba+H20=...​
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