Question

write suitable diagram and balance chemical equation​

Answer 1

CH4 + O2 → CO2 + 2 H2O. Inspection of the last atom to be balanced (oxygen) shows that the right-hand side has four atoms, while the left-hand side has two. It can be balanced by putting a 2 before O2, giving the balanced equation: CH4 + 2 O2 → CO2 + 2 H2O.