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Based on the Law of Conservation of Mass, what mass of [tex]H_2O[/tex] is created during the reaction?

[tex]\[
\begin{array}{c}
CH_4 + O_2 \longrightarrow CO_2 + H_2O \\
16\, \text{g} \quad + \quad 64\, \text{g} \quad \longrightarrow \quad 44\, \text{g} \quad + \quad [?]
\end{array}
\][/tex]

Give your answer to the correct number of significant figures.


Sagot :

To determine the mass of [tex]\(H_2O\)[/tex] formed during the reaction using the Law of Conservation of Mass, we will follow these steps:

1. Understand the given data:
- Mass of [tex]\(CH_4\)[/tex] (Methane) is 16 grams.
- Mass of [tex]\(O_2\)[/tex] (Oxygen) is 64 grams.
- Mass of [tex]\(CO_2\)[/tex] (Carbon Dioxide) is 44 grams.
- We need to find the mass of [tex]\(H_2O\)[/tex] (Water).

2. Apply the Law of Conservation of Mass:
The Law of Conservation of Mass states that the total mass of reactants must equal the total mass of products.

3. Calculate the total mass of reactants:
[tex]\[ \text{Total mass of reactants} = \text{Mass of } CH_4 + \text{Mass of } O_2 \][/tex]
Substituting the given values:
[tex]\[ \text{Total mass of reactants} = 16 \, \text{g} + 64 \, \text{g} = 80 \, \text{g} \][/tex]

4. Set up the equation for mass conservation:
[tex]\[ \text{Total mass of reactants} = \text{Total mass of products} \][/tex]
Let [tex]\(X\)[/tex] be the mass of [tex]\(H_2O\)[/tex]:
[tex]\[ 80 \, \text{g} = 44 \, \text{g} + X \][/tex]

5. Solve for the mass of [tex]\(H_2O\)[/tex]:
[tex]\[ X = 80 \, \text{g} - 44 \, \text{g} \][/tex]
[tex]\[ X = 36 \, \text{g} \][/tex]

Therefore, the mass of [tex]\(H_2O\)[/tex] produced during the reaction is 36 grams.
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