pls help

8:01 PM Tue Sep 21 - 50% & 000 IR-NMR-Worksheet 2072-20 Mass-Spec-Problems 1) For each mass spectrum below, solve the molecular formula and write it clearly on the spectrum 156 155 100 80 (a) 60 OL 10 30 10 SO 60 70 100 110 120 130 140 150 100 80 ml HO 150 0 bi 60 40 29 20 122 | 100 110 120 130 140 150 160 10 20 40 50 60 70 0 100 55 NO c) 60 whe 40 20 92 10 le 40 SO 60 70 BD 90 mie 100 110 120 130 140 150 160 86 d) 50 100) 113 ol TO 20 N 70 90 100 110 1201 149 150 100