Answer:
See Below:
Step-by-step explanation:
Part A
Nickel(II) hydroxide: in this compound, Nickel has oxidation state of 2+, and we can safely assume hydroxide ion OH- has -1 oxidation. Hence, our chemical formula would be:
![Ni(OH)_(2)](https://img.qammunity.org/2021/formulas/chemistry/college/6y32blinonm2c93lovco4y2eicmeqtb27c.png)
Part B
Acids give off hydrogen ion as the only positively charged ions in solution. Since oxidation number of hydrogen is 1+, chemical formula of carbonic acid is :
Part C
- Nitric =
![HNO_(3)](https://img.qammunity.org/2021/formulas/chemistry/high-school/lw7cklyyc0cjx8zfzbowwj4dbzzkor1smr.png)
- Nitrous acid =
![HNO_(2)](https://img.qammunity.org/2021/formulas/chemistry/college/8h5d6fjqmh1erg6bi0lehkt5iqp9uvp6ct.png)
- Chloric acid =
![HClO_(3)](https://img.qammunity.org/2021/formulas/chemistry/middle-school/udyushcp496pvve6qrmz9sezu7ottggr49.png)
- Hydrochloric acid = HCl