I need help with physioEX Exercise 1

A C T I V I T Y 1
Simulating Dialysis (Simple Diffusion)

Which solute(s) were able to diffuse into the right beaker
from the left?
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Which solute(s) did not diffuse?
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If the solution in the left beaker contained both urea and albumin,
which membrane(s) could you choose to selectively
remove the urea from the solution in the left beaker? How
would you carry out this experiment?
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Assume that the solution in the left beaker contained NaCl in
addition to the urea and albumin. How could you set up an
experiment so that you removed the urea, but left the NaCl
concentration unchanged? Hint: Assume that you also have
control of the contents in the right beaker.
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