Calculate the empirical formula of compound Q.
Determine the molecular formula of compound R.
Name the other product that is formed when a carboxylic acid reacts with an alcohol.
Name the type of catalyst that is used when a carboxylic acid reacts with an alcohol.
Name the carboxylic acid and the alcohol which react together to form ester S.
Name the type of polymerisation that is used to produce this polymer.
Suggest why it is not possible to write the molecular formula of this polymer.
State the number of monomer units that are needed to make the part of the polymer structure shown in Fig. 6.1.
Draw the displayed formula of the monomer used to make this polymer.
Complete Fig. 6.2 to show all the atoms and all the bonds in the two functional groups of the amino acid.
On Fig. 6.3, draw a circle around one amide linkage.
State the name given to natural polyamides made from amino acids.