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Sagot :
Let's solve the problem step-by-step.
The balanced chemical equation would distribute the four atoms of oxygen among water (\( H_2O \)) and oxygen gas (\( O_2 \)).
To determine the correct coefficients, we need to balance the atoms of oxygen in the reactants and the products.
First, let's check each provided option:
1. 2 in front of water and 2 in front of oxygen:
[tex]\[ 2 H_2O + 2 O_2 \rightarrow Products \][/tex]
Water (\( H_2O \)) has 1 oxygen per molecule and Oxygen gas (\( O_2 \)) has 2 oxygen atoms per molecule.
Total oxygen atoms:
[tex]\[ 2 \times 1 + 2 \times 2 = 2 + 4 = 6 \text{ atoms of oxygen} \][/tex]
This doesn't match the 4 atoms we need.
2. 1 in front of water and 2 in front of oxygen:
[tex]\[ 1 H_2O + 2 O_2 \rightarrow Products \][/tex]
Total oxygen atoms:
[tex]\[ 1 \times 1 + 2 \times 2 = 1 + 4 = 5 \text{ atoms of oxygen} \][/tex]
This also doesn't match.
3. 1 in front of water and 1 in front of oxygen:
[tex]\[ 1 H_2O + 1 O_2 \rightarrow Products \][/tex]
Total oxygen atoms:
[tex]\[ 1 \times 1 + 1 \times 2 = 1 + 2 = 3 \text{ atoms of oxygen} \][/tex]
This still doesn't match.
4. 2 in front of water and 1 in front of oxygen:
[tex]\[ 2 H_2O + 1 O_2 \rightarrow Products \][/tex]
Total oxygen atoms:
[tex]\[ 2 \times 1 + 1 \times 2 = 2 + 2 = 4 \text{ atoms of oxygen} \][/tex]
This matches the 4 atoms we have.
Thus, the correct coefficients that balance the oxygen atoms in the reactants and products are 2 in front of water and 1 in front of oxygen.
The correct choice is:
[tex]\[ \boxed{4} \][/tex]
The balanced chemical equation would distribute the four atoms of oxygen among water (\( H_2O \)) and oxygen gas (\( O_2 \)).
To determine the correct coefficients, we need to balance the atoms of oxygen in the reactants and the products.
First, let's check each provided option:
1. 2 in front of water and 2 in front of oxygen:
[tex]\[ 2 H_2O + 2 O_2 \rightarrow Products \][/tex]
Water (\( H_2O \)) has 1 oxygen per molecule and Oxygen gas (\( O_2 \)) has 2 oxygen atoms per molecule.
Total oxygen atoms:
[tex]\[ 2 \times 1 + 2 \times 2 = 2 + 4 = 6 \text{ atoms of oxygen} \][/tex]
This doesn't match the 4 atoms we need.
2. 1 in front of water and 2 in front of oxygen:
[tex]\[ 1 H_2O + 2 O_2 \rightarrow Products \][/tex]
Total oxygen atoms:
[tex]\[ 1 \times 1 + 2 \times 2 = 1 + 4 = 5 \text{ atoms of oxygen} \][/tex]
This also doesn't match.
3. 1 in front of water and 1 in front of oxygen:
[tex]\[ 1 H_2O + 1 O_2 \rightarrow Products \][/tex]
Total oxygen atoms:
[tex]\[ 1 \times 1 + 1 \times 2 = 1 + 2 = 3 \text{ atoms of oxygen} \][/tex]
This still doesn't match.
4. 2 in front of water and 1 in front of oxygen:
[tex]\[ 2 H_2O + 1 O_2 \rightarrow Products \][/tex]
Total oxygen atoms:
[tex]\[ 2 \times 1 + 1 \times 2 = 2 + 2 = 4 \text{ atoms of oxygen} \][/tex]
This matches the 4 atoms we have.
Thus, the correct coefficients that balance the oxygen atoms in the reactants and products are 2 in front of water and 1 in front of oxygen.
The correct choice is:
[tex]\[ \boxed{4} \][/tex]
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