To determine how many iron atoms react with 30 molecules of chlorine, we will use the stoichiometry of the chemical reaction between chlorine (Cl₂) gas and iron (Fe) metal. Here’s the step-by-step explanation:
1. Chemical Reaction: The balanced chemical equation for the reaction between chlorine gas (Cl₂) and iron (Fe) is:
[tex]\[
\text{Cl₂} + 2\text{Fe} \rightarrow 2\text{FeCl₂}
\][/tex]
This tells us that 1 molecule of Cl₂ reacts with 2 atoms of Fe.
2. Given Information:
- We need to find out how many iron atoms (Fe) react with 30 molecules of chlorine gas (Cl₂).
3. Stoichiometric Calculations:
- According to the balanced equation, 1 molecule of Cl₂ reacts with 2 atoms of Fe.
- If 1 molecule of Cl₂ reacts with 2 atoms of Fe, then 30 molecules of Cl₂ will react with:
[tex]\[
30 \text{ molecules of Cl₂} \times 2 \text{ atoms of Fe per Cl₂ molecule} = 60 \text{ iron atoms}
\][/tex]
4. Conclusion:
- 30 molecules of chlorine (Cl₂) will react with 60 iron (Fe) atoms.
Since the question is asking how many iron atoms react with 30 molecules of chlorine, and the calculated result is 60 iron atoms, none of the given options (A 10, B 15, C 20, D 30) match the correct result. Therefore, based on the stoichiometric calculation, it appears that the numerical answer is not listed among the provided choices. The accurate answer should be 60 iron atoms.
