For this question use the necessary data from Table 1.1. Even though you don’t know the absolute concentration of the BTB on the paper towel as it wicks out, you can graph its relative concentration. Assume that the highest concentration of BTB is at the center of the drop. For convenience, call this highest concentration "100" and call the concentration at the drops outermost edge "0". (You do not need to assign units, because the concentrations you are graphing are relative concentrations.)