help pls

1. Fill in the missing intermediates in the mechanism for the dehydration of 2-methyl-2butanol to form 2-methyl-2-butene. 2. Which of the following alkenes (AC) is most stable? Which is least stable? Which do you expect to be the major product of this reaction? 3. Attach both the IR and mass spectra of 2-methyl-2-butanol and 2-methyl-2-butene. Be sure to indicate prominent peaks in both spectra. For example, in the IR of 2-methyl-2-butanol, label the OH,sp3CH and CO stretching vibrations, and in the IR spectrum of the 2-methyl-2-butene, label the sp2C-H, sp 3CH and C=C stretehing vibrations. In the mass spectra of the two compounds, label M+, the base peak, and one or two fragment peaks. Draw the structures corresponding to the labeled peaks in the mass spectra