Name the monomer in the following fibres:
(a) cotton-
(b) polyester-
(c) polythene-

Cotton- Cellulose

Polyester-

made up of the monomer which is a combination of Ethane-1,2-diol and benzene-1,4-dicarboxylic acid (terephthalic acid). The polyesters have a wide number of uses depending upon the orientation of the different monomers present in the polymer

Ploythene- Ethlyne or ethane.

the answer is 75.0%.

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.