Interpretation:
The reason for equation to be balanced before calculating the volumes of gases involved needs to be explained.
Concept introduction:
Stoichiometric concepts are involved to determine the volumes of gases involved.
![Check Mark](/static/check-mark.png)
Answer to Problem 79A
Because stoichiometry coefficients are the ratios among gas volume in the balanced chemical equation.
Explanation of Solution
A balanced chemical equation gives the quantitative relationship of volumes between various reactants and products.
Thus it is necessary to balance a chemical equation before using relative gas volume relationships.
Chapter 13 Solutions
Chemistry: Matter and Change
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