HELP PLEASE DUE ASAP. need all four

The MS spectrum below belongs to 2-methyl-1-propanol. Identify the mz/ value for the base peak. 100 119-16-0099 BO 60 Relative Intensity 40 20- 0 10 . 20 30 40 60 70 80 90 50 m/z 27 33 43 74 Identify the molecule that is most likely responsible for the IR spectrum below. mo IT NH points) How many signal would appear in the 13C-NMR spectrum for this molecule? 06 03 3 4 8 Identify the molecule that produces the 'H-NMR spectrum. a [3] [3] [2] [1] [2] [2] 2] PPM