What is NH3OAc?

Answer 1

This is Ammonium Acetate. "Ac" stands for the acetyl group, COCH3. The NH3 is ammonia, which is actually protonated to NH4+, so the actual formula is NH4-O-COCH3.

Answer 2

NH3OAc is the chemical formula representing ammonium acetate, which is a salt composed of ammonium and acetate ions. It is commonly used in laboratory settings as a source of acetate ions and a buffering agent in various chemical reactions.