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Complete the chemical equations:

1. [tex]\( N_2 + H_2 \rightarrow NH_3 \)[/tex]
2. [tex]\( N_2 + O_2 \rightarrow NO \)[/tex]
3. [tex]\( NO + O_2 \rightarrow NO_2 \)[/tex]
4. [tex]\( Na + O_2 \rightarrow Na_2O \)[/tex]
5. [tex]\( S + O_2 \rightarrow SO_2 \)[/tex]
6. [tex]\( Cu + AgNO_3 \rightarrow Cu(NO_3)_2 + Ag \)[/tex]
7. [tex]\( NaNO_3 \rightarrow NaNO_2 + O_2 \)[/tex]
8. [tex]\( Na + H_2O \rightarrow NaOH + H_2 \)[/tex]
9. [tex]\( H_2SO_4 + Ca(OH)_2 \rightarrow H_2O + CaSO_4 \)[/tex]
10. [tex]\( H_2O + Al_2O_3 \rightarrow Al(OH)_3 \)[/tex]

Sagot :

Let's balance each of the given chemical equations step by step.

1. [tex]\( N _2 + \ldots H _2 \rightarrow \longrightarrow NH _3 \)[/tex]
- To balance this equation, you need:
[tex]\[ N_2 + 3H_2 \rightarrow 2NH_3 \][/tex]
- This ensures an equal number of nitrogen and hydrogen atoms on both sides.

2. [tex]\( N _2 + O _2 \rightarrow \text { NO } \)[/tex]
- To balance this equation, you need:
[tex]\[ N_2 + O_2 \rightarrow 2NO \][/tex]
- This balances nitrogen and oxygen atoms.

3. [tex]\( NO + \ldots O_2 \rightarrow \text{ NO}_2 \)[/tex]
- To balance this equation, you need:
[tex]\[ 2NO + O_2 \rightarrow 2NO_2 \][/tex]
- This keeps the number of nitrogen and oxygen atoms equal on both sides.

4. [tex]\( Na + \ldots O_2 \rightarrow \text{Nan} \)[/tex]
- To balance this equation, you need:
[tex]\[ 4Na + O_2 \rightarrow 2Na_2O \][/tex]
- This balances sodium and oxygen atoms properly.

5. [tex]\( S + \ldots O_2 \rightarrow \text{SO}_2 \)[/tex]
- This equation is already balanced as is:
[tex]\[ S + O_2 \rightarrow SO_2 \][/tex]

6. [tex]\( Cu + \ldots AgNO_3 \rightarrow \_ Cu(NO_3)_2 + \ldots Ag \)[/tex]
- To balance this equation, you need:
[tex]\[ Cu + 2AgNO_3 \rightarrow Cu(NO_3)_2 + 2Ag \][/tex]
- This ensures the balance of copper, silver, nitrogen, and oxygen atoms.

7. [tex]\( NaNO_3 \rightarrow \longrightarrow NaNO_2 + \ldots O_2 \)[/tex]
- To balance this equation, you need:
[tex]\[ 2NaNO_3 \rightarrow 2NaNO_2 + O_2 \][/tex]
- Ensuring the balance of sodium, nitrogen, and oxygen atoms.

8. [tex]\( \_ Na + \ldots H_2 O \rightarrow \text{NaOH} + \ldots H_2 \)[/tex]
- To balance this equation, you need:
[tex]\[ 2Na + 2H_2O \rightarrow 2NaOH + H_2 \][/tex]
- Balancing sodium, hydrogen, and oxygen atoms.

9. [tex]\( H_2SO_4 + \ldots Ca(OH)_2 \rightarrow H_2O + \ldots CaSO_4 \)[/tex]
- To balance this equation, you need:
[tex]\[ H_2SO_4 + Ca(OH)_2 \rightarrow 2H_2O + CaSO_4 \][/tex]
- Ensuring the balance of sulfur, calcium, oxygen, and hydrogen.

10. [tex]\( H_2O + \ldots Al_2O_3 \rightarrow \_ Al(OH)_3 \)[/tex]
- To balance this equation, you need:
[tex]\[ 3H_2O + Al_2O_3 \rightarrow 2Al(OH)_3 \][/tex]
- Keeping the balance of aluminum, hydrogen, and oxygen atoms.

These are the balanced chemical equations derived from the initial problem statement.