select the correct answer.\nconsider the following chemical equation:\nnh₃ + o₂ → no + h₂o\nthe equation is…

Explanation:

Step1: Balance nitrogen atoms

In the un - balanced equation $NH_3+O_2\rightarrow NO + H_2O$, there is 1 nitrogen atom on the left - hand side and 1 on the right - hand side. To balance nitrogen, we can start by looking at the number of nitrogen atoms in the compounds. If we put a coefficient of 4 in front of $NH_3$ and $NO$, we have 4 nitrogen atoms on both sides: $4NH_3+O_2\rightarrow4NO + H_2O$.

Step2: Balance hydrogen atoms

With 4 moles of $NH_3$, we have $4\times3 = 12$ hydrogen atoms on the left - hand side. To balance hydrogen, we need to put a coefficient of 6 in front of $H_2O$ since $6\times2=12$. So the equation becomes $4NH_3+O_2\rightarrow4NO + 6H_2O$.

Step3: Balance oxygen atoms

On the right - hand side, we have $4\times1 + 6\times1=10$ oxygen atoms in $4NO$ and $6H_2O$. So we need to put a coefficient of 5 in front of $O_2$ on the left - hand side to get 10 oxygen atoms. The balanced equation is $4NH_3 + 5O_2\rightarrow4NO+6H_2O$.

Answer:

C. $4NH_3 + 5O_2\rightarrow4NO + 6H_2O$