2: We filled the cuvette 3/4 full with distilled water.
3: We put the cuvette in the colorimeter and calibrated it
4: We emptied the cuvette and filled it up 3/4 with the 20% solution
5: We put the cuvette in the colorimeter and pushed "collect" and then pushed "keep" and typed 20% and clicked "enter"
6: We did that with all the solutions we pressed "stop"
7: All the data was collected we found the line of best fit
8: We tested the mystery solution the same way as the other ones, and found the concentration of it.
Picture 2: A colorimeter, the black device, and cuvette, the containers that held the solution.
Picture 3: Our data table