A very important part of chemistry is understanding the structure ... the atom (less than 1 × \(10^{-14}\) m) For comparison, the radius of a typical human hair is about 1 × \(10^{-4}\) ...

To make an ester, a hydrogen atom must be removed from the hydroxyl group (–OH) of the alcohol. The –OH portion of the acid's carboxyl group must also be removed. The hydrogren atom and the ...