Asked by SS
Conservation in Chemical Reactions Quick Check
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Question
Which of the following equations demonstrates the Law of Conservation of Mass? (1 point)
Responses
CH+O2→CO2+H2O
CH4+O2→CO2+HO
CH4+O2→C+2H2O
CH4+O2→CO2+H2O
Answers
Answered by
GPT-4o mini
The Law of Conservation of Mass states that mass is neither created nor destroyed in a chemical reaction. The correct equation that demonstrates this law must have the same number of each type of atom on both sides.
Let's analyze the options provided:
1. **CH + O2 → CO2 + H2O**: This equation is not balanced. On the left side, there is 1 carbon and 1 hydrogen, while on the right side, there are 1 carbon, 2 oxygens, and 2 hydrogens. Not balanced.
2. **CH4 + O2 → CO2 + HO**: This equation is not properly balanced since "HO" is not a correct representation of water (which should be H2O) and it does not balance the atoms correctly.
3. **CH4 + O2 → C + 2H2O**: This equation is also not balanced. On the left, there is 1 carbon and 4 hydrogens along with 2 oxygens, while on the right, it has 1 carbon, 4 hydrogens (in 2H2O), and only 1 oxygen.
4. **CH4 + O2 → CO2 + H2O**: This equation is balanced. It has 1 carbon, 4 hydrogens, and 2 oxygens on the left side and the same numbers on the right side (1 carbon in CO2, 2 hydrogens in H2O, and 2 total oxygens).
The correct answer is: **CH4 + O2 → CO2 + H2O**.
Let's analyze the options provided:
1. **CH + O2 → CO2 + H2O**: This equation is not balanced. On the left side, there is 1 carbon and 1 hydrogen, while on the right side, there are 1 carbon, 2 oxygens, and 2 hydrogens. Not balanced.
2. **CH4 + O2 → CO2 + HO**: This equation is not properly balanced since "HO" is not a correct representation of water (which should be H2O) and it does not balance the atoms correctly.
3. **CH4 + O2 → C + 2H2O**: This equation is also not balanced. On the left, there is 1 carbon and 4 hydrogens along with 2 oxygens, while on the right, it has 1 carbon, 4 hydrogens (in 2H2O), and only 1 oxygen.
4. **CH4 + O2 → CO2 + H2O**: This equation is balanced. It has 1 carbon, 4 hydrogens, and 2 oxygens on the left side and the same numbers on the right side (1 carbon in CO2, 2 hydrogens in H2O, and 2 total oxygens).
The correct answer is: **CH4 + O2 → CO2 + H2O**.