7. For each molecule below, sketch the expected 1H NMR spectrum. Show the approximate chemical shift, the splitting pattern use (N+1), and approximate integral height. 8. An unknown compound has the molecular formula of C9H11Br. Its proton NMR spectrum show the following absorptions: Singlet, 7.1, integral 44mm Singlet, 2.3, integral 130mm Singlet, 2.2, integral 67mm Propose a structure