12. Acetamide is a colorless, crystalline (sand-like) material. It is used in lacquers, explosives, and soldering flux, and as a stabilizer, plasticizer and solvent. H -H . . acetamide a. Identify all sigma bonds and pi bonds. What is the total number of each in this molecule? [/2 A] b. Identify the molecular geometry of each central atom [/3 A] C. Draw the 3D Lewis structure for this compound [/3 A]