(a(i))[1]
State the molecular formula of $P$.
(a(ii))[2]
Draw the repeat unit of Lycra®.
(a(iii))[2]
Lycra® fibres are strong because of the intermolecular forces between the polymer chains. Complete the table to identify two intermolecular forces that cause this property and the group(s) involved.
(b)[3]
Give one example of each of the following polymer types: synthetic polyamide; synthetic polyester; conducting polymer; non-solvent based adhesive.
(c(iii))[2]
Lycra$^{\text{\textregistered}}$ fibres are strong because of the intermolecular forces between the polymer chains. Complete the table to identify two intermolecular forces that are responsible for this property and the group(s) involved.