3. Figure below is the mass spectrum of a haloalkane B. a. What is the fragment for the base peak at m/z29? b. Deduce and explain the halogen present in the compound. Hence, identify compoundB c. Suggest why the two peaks at m/2 =108 and 110 have almost the same Intensity? (Relative atomic masses: F=19.0, CI = 35.5 Br = 79.9,1 = 1269) [3 marks 108 110 1- 70 4. Butanal and methylpropanal give slightly different mass spectra. Both give a molecular ion peak at m/2 = 72, but butanal gives four other peaks whereas methylpropanal only gives three State the species responsible for the four other peaks in the mass spectrum of butanal and write equations to show their formation from the molecular ion. [7 marks)