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What was the average diffusion rate of urea when the 200 MWCO membrane was used as a barrier?
Wiki User
∙ 12y ago
Once diffusion occurs it does not matter the MWCO of the membrane, but it depends on difference of concentration, as it is said in Fick's first law.
Wiki User
∙ 12y ago
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Which MWCO membrane had the greatest filtration rate?
200 MWCO
For NaCl which MWCO membrane provided for the net movement of water without movement of NaCl?
20 MWCO
What does MWCO stand for?
What does MWCO stand for
Which solutes were able to pass through the 20 MWCO membrane?
None. The molecules were either too polar or they were too big to be transported.
What solute's passed through the 100 MWCO membrane?
using a 100 MWCO membrane means that any element, molecule, ion or particle with a molar mass of less than or equal to 100 will be able to pass through. there is an infinite number of combinations able to pass through. sodium and calcium ions would both pass through for example.
Why did Nacl pass through the 50 MWCO and not urea?
Because Na has MW of ~23 and Cl has MW of ~35...both of which are small enough to pass through a molecular weight cut off (MWCO) of 50 (don't add there molecular weights together). urea has ~ MW of 60 so it's too big to cross membrane.
What does MWCO stand for and definition?
molecular weight cut off
What dialysis membranes has the largest pore sizes?
200 MWCO
Will glucose and albumin diffuse through 200 MWCO?
cuz Albumin has much higher weight other than 200 while Glucose has 180 Da, small enough to pass through the membrane pores
What do they mean by MWCO in dialysis tubing?
First of all, the filtration in dialysis doesn't happen in the tubing. Rather it happens in an artificial kidney called the dialyzer. It's essentially a dense bundle of thousands of fibers which make up the filter itself. The fibers allow the blood to pass through the dialyzer and the potassium and bicarbonate solution used to mix with the blood crosses over the fibers, cleaning the blood via filtration. MWCO (molecular weight cut off) in dialysis simply means the amount of molecules that are allowed to pass through the membranes. Proteins are too big to pass by design as we don't want to "wash away" the good stuff. Wastes like urea, nitrogen etc are allowed to pass through and out of the blood before the blood returns to the patient. Generally, the bigger the patient, the more filtration is required, so the higher the MWCO is. Hope this helps!
Was the membrane-tubing-permeable to starch?
I'm assuming this is in reference to an experiment where you put a starch in dialysis tubing, and then put iodine in surrounding solution. Dialysis tubing has a limit of roughly mwco (molecular weight cut off of 10,000). Iodine has a molecular weight of roughly 126, so it can pass through. On the other hand, starch is a polymer of 1000's of glucose molecules. Glucose (C6H12O6) has a molecular weight of roughly 180. 1000 * 180 = 180,000, so glucose cannot pass through the dialysis tubing. In this experiment you should see the sealed tubing turn purple-pinkish after the iodine diffuses through. The outside solution should remain the same color.
