In dyes diffusion across a collodial medium, (I dont have any data about the medium) what is the relationship?

Question

between the diffusion rate and the molecular weight? Is it R=1/(m^0.5) or is that just for gases? I have the diffusion rates and molecular weights of each dye. Or should I just use R1/R2=(m1^0.5)/(m2^0.5)? can I use that for liquid diffusion ? thank you

Answer 1

R=1/(m^0.5) , it is an inverse relationship.