
Concept explainers
Interpretation: The equation that best describes the reaction of element X (
Concept Introduction: Chemical equation is written in such a way that the symbolic representation of reaction represents the reaction taking place in the system. The reactants are written on the left-hand side and the products are written on the right-hand side of the equation and are separated by an arrow, two or more reactants and products are separated by “+”.
The reactions for those the number of atoms of each element in the reactant and in the product, side are equal, such reactions are said to be a balanced chemical equation.

Answer to Problem 7STP
The correct option is (c),
Explanation of Solution
Given:
In the given reaction, the
Counting the number of elements in the reactant side:
That means there are 2 elements of X and 8 elements of Y in the reactant side.
Now, counting the number of products and elements in the product side:
That means there are 2 element Y and 3compounds
It can be observed from the reaction that 1 atom of X combines with 2 atoms of Y to form a molecule
Hence, the chemical equation that best describes the reaction is:
Chapter 7 Solutions
World of Chemistry, 3rd edition
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