No2 Memes

The cartoon rabbit saying "NO 2 " perfectly captures nitric acid's (HNO 3 ) aggressive personality in the lab. It oxidizes nearly everything it touches, producing nitrogen dioxide (NO 2 ) gas in the process - hence the rejection. Every chemist knows that distinctive red-brown cloud means your gloves, lab coat, and dignity are about to be compromised. The meme is basically nitric acid's dating profile: "Enjoys long walks through metal cabinets and turning organic matter into yellow stains."