(a) Show how fragmentation occurs to give the base peak at m z58 in the mass spectru...

(a) Show how fragmentation occurs to give the base peak at m z58 in the mass spectrum of ethyl propyl amine (N-ethylpropan-1- amine), shown below.

(b) Show how a similar cleavage in the ethyl group gives an ion of / z2.

(c) Explain why the peak at m/z 72 is much weaker than the one at m/z 58.