<h2>QUESTION:- Which functional group is found in an ester?</h2>
ESTER IS THE COMPOUND IN WHICH OH GROUP IS REPLACED BY THE (O) in the substitution reaction.
so common formula of ester ->
RCOOR'
IN WHICH R AND R' ARE CARBON CHAINS
It's probably animal if that's what's you're asking.
Protons: 12
Neutrons: 13
<span>Electrons: 12</span>
16(2)/74.1=.431
.431x100= 43.1%