Question

Hg+ O2→ H2+ O2→ Mg+ O2→ Li+ O2→ Cu + S → Н2 + Сl2 →

Answer 1

Hg+ O2→ HgO

2HgO → 2Hg + O2

H2+ O2→H2O

2H2O → 2H2 + O2

Mg+ O2→MgO

2Mg + O2 → 2MgO

Li+ O2→ Li2O

4Li + O2 → 2Li2O

Cu + S →Cu2S

2Cu + S → Cu2S

Н2 + Сl2 →HCl

H2 + Cl2 → 2HCl

Answer 2

Let's go through each of the chemical reactions you've provided:

1. Hg + O2 → This reaction does not specify the products, so we can't determine the balanced equation without additional information.

2. H2 + O2 → This is the well-known reaction for the combustion of hydrogen gas. The balanced equation is:

2H2 + O2 → 2H2O

3. Mg + O2 → This is the reaction of magnesium with oxygen to form magnesium oxide. The balanced equation is:

2Mg + O2 → 2MgO

4. Li + O2 → This is the reaction of lithium with oxygen to form lithium oxide. The balanced equation is:

4Li + O2 → 2Li2O

5. Cu + S → This is the reaction of copper with sulfur to form copper(II) sulfide. The balanced equation is:

Cu + S → CuS

6. H2 + Cl2 → This is the reaction of hydrogen gas with chlorine gas to form hydrogen chloride. The balanced equation is:

H2 + Cl2 → 2HCl

Note that the reactions you've provided involve different elements and compounds combining to form new compounds. The balanced equations indicate the stoichiometry of the reactions, ensuring that the number of atoms is conserved on both sides of the equation.