This is a series of chemical reactions involving zinc (Zn) and its compounds.

Zn + O2 -> ZnO (Zinc oxide)ZnO + H2O -> Zn(OH)2 (Zinc hydroxide)Zn(OH)2 + H2S -> ZnS (Zinc sulfide)ZnS + H2O + CO2 -> ZnCO3 (Zinc carbonate)