The burning of natural gas in a gas stove is an example of a combustion reaction. Natural gas is mostly methane, CH4. The O2 gas comes from the air. Which of these is the correct chemical reaction for this? A) H2CO3 + H2O → CO2 B) CH4 (g) → CO2 (g) + 2 H2O (g) C) CH4 (g) + O2 (g)→ CO2 (g) + H2O (g) D) CH4 (g) + 2 O2 (g) → CO2 (g) + 2 H2O (g)

Option D) CH4 (g) + 2O2 (g) → CO2 (g) + 2H2O (g)

Explanation:

Methane undergoes Combustion in the presence of O2 to produce CO2 and H20 according to the equation

CH4 + O2 → CO2 + H2O

Now let us balance the equation.

There are 4 atoms of H on the left side and 2 atoms on the right side. It can be balance by putting 2 in front of H2O as illustrated below:

CH4 + O2 → CO2 + 2H2O

Now, there are a total of 4 atoms of O on the left side and 2 atoms on the right side. It can be balance by putting 2 in front of O2 as illustrated below:

CH4 + 2O2 → CO2 + 2H2O

personal, she chose to do it.

the answer is d. 74.02