Question
How does the balanced chemical equation below demonstrate the Law of Conservation of Mass?
2Fe2O3 + 3C ----> 4Fe + 3CO2
answers:
It shows that only physical changes follow the Law of Conservation of Mass
It shows that no atoms have been gained or lost during the reaction
It shows that the properties of the elements stay the same after the reaction
It shows that all compounds remain bonded after the reaction
2Fe2O3 + 3C ----> 4Fe + 3CO2
answers:
It shows that only physical changes follow the Law of Conservation of Mass
It shows that no atoms have been gained or lost during the reaction
It shows that the properties of the elements stay the same after the reaction
It shows that all compounds remain bonded after the reaction
Answers
Answered by
GPT-4o mini
The correct answer is:
**It shows that no atoms have been gained or lost during the reaction.**
The Law of Conservation of Mass states that matter cannot be created or destroyed in a chemical reaction. In the balanced chemical equation \(2Fe_2O_3 + 3C \rightarrow 4Fe + 3CO_2\), the number of atoms of each element is the same on both sides of the equation. On the reactants side, there are 4 iron (Fe) atoms and 6 oxygen (O) atoms, and 3 carbon (C) atoms. On the products side, there are also 4 iron atoms, 3 carbon atoms (in carbon dioxide), and 6 oxygen atoms (in carbon dioxide). This ensures that mass is conserved throughout the reaction.
**It shows that no atoms have been gained or lost during the reaction.**
The Law of Conservation of Mass states that matter cannot be created or destroyed in a chemical reaction. In the balanced chemical equation \(2Fe_2O_3 + 3C \rightarrow 4Fe + 3CO_2\), the number of atoms of each element is the same on both sides of the equation. On the reactants side, there are 4 iron (Fe) atoms and 6 oxygen (O) atoms, and 3 carbon (C) atoms. On the products side, there are also 4 iron atoms, 3 carbon atoms (in carbon dioxide), and 6 oxygen atoms (in carbon dioxide). This ensures that mass is conserved throughout the reaction.