Use the chemical reaction to answer the question.
2H2O2→H2O +O2
Which equation for this reaction demonstrates the Law of Conservation of Mass?
(1 point)
2H2O2 → 2H2O + 202
2H2O2 → 2H2O + O2
H2O2 H2O + 202
H2O2 H2O + O2
The equation that demonstrates the Law of Conservation of Mass is:
2H2O2 → 2H2O + O2
The equation that demonstrates the Law of Conservation of Mass is:
2H2O2 → 2H2O + O2
This equation shows that on the left side of the arrow we have 2 moles of H2O2, and on the right side of the arrow, we have 2 moles of H2O and 1 mole of O2. The number of atoms of each element (hydrogen and oxygen) is the same on both sides of the equation, which is consistent with the Law of Conservation of Mass.
To identify which equation demonstrates the Law of Conservation of Mass using the given chemical reaction (2H2O2 → H2O + O2), we need to ensure that the number and type of atoms are balanced on both sides of the equation.
Looking at the equation options:
1. 2H2O2 → 2H2O + 202
2. 2H2O2 → 2H2O + O2
3. H2O2 H2O + 202
4. H2O2 H2O + O2
Option 1 is not balanced since it has 202 instead of O2 on the right side.
Option 2 is balanced since there are two hydrogen atoms, four oxygen atoms, and two hydrogen atoms, and two oxygen atoms on both sides of the equation. This demonstrates the Law of Conservation of Mass.
Option 3 is not balanced since it only has the products and is missing the reactant H2O2.
Option 4, similar to option 2, is balanced and demonstrates the Law of Conservation of Mass.
Therefore, the correct answer is (2H2O2 → 2H2O + O2).