Balance this equation. underline ( )CH_(4)+underline ( )O_(2)arrow underline ( )CO_(2)+underline ( )H_(2)O 0.2.0.2 2.1.2.1 1,2,1,2 1,2,1,1

To balance the chemical equation, we need to ensure that the number of atoms of each element is the same on both sides of the equation.Given equation: Step 1: Balance the carbon atoms.There is 1 carbon atom on the left side and 1 carbon atom on the right side. So, the carbon atoms are already balanced.Step 2: Balance the hydrogen atoms.There are 4 hydrogen atoms on the left side and 2 hydrogen atoms on the right side. To balance the hydrogen atoms, we need to multiply the number of molecules by 2. Step 3: Balance the oxygen atoms.Now, we have 2 oxygen atoms on the left side and 4 oxygen atoms on the right side. To balance the oxygen atoms, we need to multiply the number of molecules by 2. The balanced equation is: Therefore, the correct answer is: .