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

NaNO" (and any subsequent words) was ignored because we limit queries to 32 words.

b. acid is the correct answer @jayxboof all social media

acid : acids are those which accepts an electron-pairs.

base : bases are those which donates ab electron-pairs.

alkali : it is a base that dissolves in water. it is basically a base and the ph greater than 7.

hydroxide ion : it is a poly-atomic ion which is negatively charged.

each  column  of the  table  is called a group. elements in a group share similar properties. groups are  read  from  top  to  bottom. metal. metalloid. nonmetal. solid. liquid. gas. fe. hg. o.  2. 3. 4. 5. 6. 7. 8. 9.  2. beryllium. 9.012. 4.  sodium. 22.990.  11. 3.  magnesium. 24.305.  12.  potassium. 39.098.  19. 4.  calcium. 40.078.  20. i guess  i