Identify these reactions
2 Na + Cl 2 2 NaCl
_______________________________
CaCO 3 CaO + CO 2 _________________________________________________
Zn + HCl ZnCl 2 + H2 _____________________________________________________
S + O 2 SO2 _______________________________________________________
Ag NO 3 + NaCl AgCl + NaNO 3
________________________________
4Fe + 3O 2 2 Fe 2 O 3 _________________________________________________
2HgO 2 Hg + O 2 ____________________________________________________