When doing the diffusion lab where you add blue and red dye to the corn syrup…how do you determine the molecular weight of the blue and red dye? Also, with my table showed it moved at the following rate

Sec Dye (cm)

10 2

20 2.2

30 2.4

40 2.6

50 2.6

60 2.7

70 2.7

80 2.8

90 2.9

100 2.9

110 2.9

120 3

How do I compute the total distance traveled in (mm) and the speed of diffusion (mm/hr)?