Question

NH3 + O2 → NO + H2O

The equation is unbalanced. Which answer is the correct balanced equation?
NH3 + 2O2 → NO + 6H2O.
4NH3 + 5O2 → 4NO + H2O.
4NH3 + 5O2 → 4NO + 6H2O
NH3 + 5O2 → NO + 6H2O

Answer 1

Answer:

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Answer 2

The 3rd option, that is, 4NH3+5O2→4NO+6H2O

Explanation- On the reactant side,             On the product side,

                             N=4                                  N=4

                             H=12                                 H=12

                             O=10                                 O=10

The number of atoms of each molecule in the reactant side is equal to the no of atoms of each molecule in the product side. This equation satisfies the law of conservation of mass.