Describe what waves are and how they transfer energy in different types of media.

See figures 1 and 2

Explanation:

In the first part of the problem, we have the electrophilic aromatic substitution (Friedel-crafts reaction) in naphthalene. The first step is the production of the acylium ion by the reaction of acetyl chloride and . Then a double bond attacks the acylium ion to form a new C-C bond. Finally, a hydrogen atom is eliminated and the aromaticity is regenerated in the molecule. (See figure 1)

In the second part of the question, we have to draw the resonance structures in this reaction when benzene is added instead of naphthalene. Where a positive charge is produced in the alpha carbon on the ring. This positive charge, can be moved inside the ring if we move the double bonds and we will have cations on the ortho and para positions. (See figure 2).