Which of the following equations demonstrates the Law of Conservation of Mass? (1 point)

Question

CH4+02 → C+2H20
CH4 + 02 → CO2 + H20
CH4 + 02 → CO2 + HO
CH + 02 → CO2 + H20

Answer 1

The equation that demonstrates the Law of Conservation of Mass is:

CH4 + O2 → CO2 + H2O

This equation shows that the mass of the reactants (molecules of methane and oxygen) is equal to the mass of the products (molecules of carbon dioxide and water).

Let's analyze the other options:

1. CH4 + O2 → C + 2H2O

   • This equation is not balanced in terms of oxygen atoms.

2. CH4 + O2 → CO2 + HO

   • This equation has an incomplete representation of water (HO), which is not correct.

3. CH + O2 → CO2 + H2O

   • This equation is missing a hydrogen atom in the reactants compared to the products, so it is not balanced.

Thus, the second equation is the correct choice.