Methane, ch4 burns in oxygen gas to form water and carbon dioxide what is the correct balanced chemical equation for this reaction

2 CH4(g) + 4 O2(g) --> 2 CO2 (g)+ 4 H2O(g)

Step-by-step explanation:

The number are subscripts.  

Now count the number of each kind of atom on the left and right side of the equation. Note, you have 4 H on the left and as written you have only 2 on the right. So add a coefficient-- a number in front of the formula.  

CH4 +O2 CO2 + 2 H2O  

With the added coefficient in front of water, the number of hydrogens balance but the number of oxygens do not. There are only 2 oxygens on the left and a total of 4 oxygens on the right. A coefficient of 2 in front of oxygen on the left balances the equation.