Answer:
Carbon 3 is double bonded to an oxygen and attached to carbon 2 and carbon 4. :
Answer: Carbonyl group ( Ketone or aldehyde)
Carbon 17 is attached to an oxygen, which is attached to a hydrogen. :
Answer: Carboxyl group (Carboxylic acid)
A central carbon is attached to an amine, two hydrogens, and a carbon that is double bonded to an oxygen and single bonded to an oxygen attached to a hydrogen. :
Answer: Amide group
An amide group contains both amine and carboxyl

It can be more effective in liquids.
Answer:
its a chemical formula, it has numbers and symbols
Because I'm the warm it melts in the cold it's frozen
Answer:
?? no entiendo la pregunta?...pero gracias por los puntos free UvU
Explanation: