Write the carbon atom(s) in numerical order as a comma separated list (e. g. to identify carbon atoms 1, 3, 4, 5, 18 and 19 write "1,3-5,18-19"). if there are no carbons with the specified hybridization, write "0" for carbon atom(s) and select "n/a" for the geometry.

2-bromo-2-methylbutane undergoes an e1 elimination reaction in the presence of ethanol. in the next reaction only one of the possible products is represented. although the product shown is not the major product of the reaction, notice that there is more than one way it can be produced. complete the mechanism and draw the missing substances.