Final answer:
The chemical symbol for nitrogen is N and for oxygen is O. In a balanced chemical equation for the reaction to form dinitrogen pentoxide, it is 2N₂ + 5O₂ → 2N₂O₅. Dinitrogen trioxide is the name of the compound with three oxygen atoms and two nitrogen atoms.
Step-by-step explanation:
The chemical symbol for nitrogen is N and for oxygen is O. When balancing chemical equations, such as the reaction of molecular nitrogen (N₂) and oxygen (O₂) to form dinitrogen pentoxide (N₂O₅), one must ensure that the number of atoms of each element is equal on both sides of the equation. The balanced equation for this reaction is 2N₂ + 5O₂ → 2N₂O₅, where the coefficients of N₂ and O₂ are chosen to yield 10 atoms of oxygen on each side, matching the subscript in N₂O₅. If we consider a different compound that contains three oxygen atoms and two nitrogen atoms, the name would be dinitrogen trioxide (N₂O₃), following the naming convention where the prefixes 'di-' and 'tri-' indicate the number of nitrogen and oxygen atoms, respectively.