$17$ For each of the dye spots on the filter paper chromatogram, measure and record to the nearest millimeter the distance that each of the spots has traveled up the solvent front. Start from the original horizontal pencil line $($base line$)$ and measure to the center of where the dye stops in each column on the paper. See Figure $3$ in the background as needed.

Note: There is room for each of the samples to separate into $3$ spots. This may not happen for all of the samples. Therefore, some of the samples will not have data recorded for Spot $2$ or $3.$

$18$ Calculate the $R_f$ value for each spot and record in Data table $1.$

$R_f=\frac{Distance\text{c}\text{o}\text{m}\text{p}\text{o}\text{u}\text{n}\text{d}\text{m}\text{o}\text{v}\text{e}\text{d}}{\text{S}\text{o}\text{l}\text{v}\text{e}\text{n}\text{t}\text{f}\text{r}\text{o}\text{n}\text{t}distance}$

Experiment $1$

Data Table $1$: Chromatogram Data

Sample Solvent front $(mm),$ Spot $1mm$

Blue $1$