Which of the following is not an example of a polymer 1. plastic 2. nylon 3. amino acid 4. polystyrene

The correct answer option is 3. amino acid.

Explanation:

Amino acids are the organic compounds that contain amine (-NH2) and carboxyl (-COOH) functional groups.

While a polymer is made up of a chain of monomers where the monomer is an amino acid. So when you have more number of amino acids, a polymer is formed.

It means that amino acid alone on its own is not a polymer.

Therefore, the correct answer option is 3. amino acid, rest all options are polymers.

number of molecules / avogadro's number * molecule molecular = mass

explanation:

we define a gram-molecular weight as the mass of one mole of any element or compound. a mole contains avogadro's number of units (molecules) –  

6.022

x

10

23

. so, dividing the number of molecules by avogadro's number gives us the number of moles. multiplying that by the molecular weight gives us the mass. from the periodic table we find the gram-molecular weight of u to be238 and of f to be19. so,  

u

f

6

will have a gram-molecular weight of 352g.

yes

ya te ayud espera