Answer
Step-by-step explanation
Given unbalanced equation:
NH₃ + O₂ → ___NO₂ + _H₂O
Step 1: Balance the N atom on both sides by putting 4 as the coefficient of NH₃ and NO₂ on the reactant and product sides of the equation respectively.
4 NH₃ + O₂ → 4 NO₂ + _H₂O
Step 2: Balance the H atom on both sides by putting 4 as the coefficient of NH₃ and NO₂ on the reactant and product sides of the equation respectively.