1. Describe two variables that affect the rate of diffusion.2. Why do you think the urea was not able to diffuse through the 20 MWCO membrane? How well did the results comparewith your prediction?3. Describe the results of the attempts to diffuse glucose and albumin through the 200 MWCO membrane. How well did theresults compare with your prediction?4. Put the following in order from smallest to largest molecular weight: glucose, sodium chloride, albumin, and urea.