Cab someone give me a balanced chemical for my exam! <3

 4 NH₃ + 5 O₂  →   4NO  + 6 H₂O

Explanation:

If we write out the chemical symbols for the molecules expressed in the question, along with the moles we get the following equation:

   4 NH₃ + 5 O₂  →   4 NO  + 6 H₂O

To know if the equation is balanced we can compare the Reantact side to the Product side for each element. If the equation is balanced, they would be equal.

      Reactant      Product

N        4                    4

H        12                  12

O        10                  6+4 = 10

∴ the equation is balanced.