Question

quiz 8.6be- counting atoms, chemical equations and the law of conservation of mass
use the periodic table to identify the atoms involved in the following chemical reaction.
2fe(oh)₃ ---> fe₂o₃ + 3h₂o
○ fluorine, oxygen, and hydrogen
○ iron, oxygen, and helium
● iron, oxygen, and hydrogen
○ fluorine, osmium, and hydrogen

Explanation:

To identify the atoms in the chemical reaction \(2\text{Fe(OH)}_3
ightarrow \text{Fe}_2\text{O}_3 + 3\text{H}_2\text{O}\), we analyze the chemical formulas. In \(\text{Fe(OH)}_3\), \(\text{Fe}\) is iron, \(\text{O}\) is oxygen, and \(\text{H}\) is hydrogen. The products \(\text{Fe}_2\text{O}_3\) (contains Fe and O) and \(\text{H}_2\text{O}\) (contains H and O) also confirm these atoms. Fluorine (F), helium (He), and osmium (Os) are not present in any of the formulas. So the atoms involved are iron, oxygen, and hydrogen.

Answer:

C. iron, oxygen, and hydrogen