1. 2. Ph Ph Mg Br toto H₂SO4/H₂O -CH3 a = Proton transfer b = Lewis acid/base c = Radical chain substitution Aqueous acetone Ph Ph OH d = Electrophilic addition e E1 Elimination f = E2 Elimination H₂O + Mg2+ Br HSO4 OH + HO-S g = SN1 Nucleophilic substitution h = SN2 Nucleophilic substitution Identify the mechanism by which each of the reactions above proceeds from among the mechanisms listed. Use the letters a - i for your answers. 1. a 2.8 -CH3

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Mass Spectrometry

This process is an instrumental method in which a sample is changed to fast moving positive ions by electron bombardment. The charged particles vary due to their different mass to charge ratio and are estimated with the help of this difference. It is also called mass spectroscopy.