State how many delocalised electrons are present in one nicotinamide molecule.
Predict the H-N-H bond angle for the NH$_2$ group in nicotinamide.
Draw the structural formula of E inside the box.
Give either the name or the formula of a suitable reagent for step 2.
Nicotinamide undergoes separate reactions with aqueous acid and aqueous alkali. In both cases, the six-membered ring is unchanged. Complete the reaction scheme by giving the structural formula of the organic product from each reaction.
Identify a reducing agent suitable for this reaction.
Predict and explain the basicity order of the NH$_2$ groups in phenylamine, C$_6$H$_5$NH$_2$, nicotinamide and compound X.
The height of the M peak in a mass spectrum of nicotinamide is 80. Calculate the predicted height of the M+1 peak.