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keith0125 keith0125
wrote...
12 years ago
Need help with Exercise 1
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5 Replies

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lena213 Author
wrote...
12 years ago
 Waving Hand Sign Hi welcome to the forum! Here is a start to the assignment
Simple Diffusion
Activity 1: Simulating Simple diffusion

      1.What is the molecular weight of Na+? 22.9
      2. What is the molecular weight of Cl-? 35.45
      3. Which MWCO dialysis membranes allowed both of these ions through? 50, 100, and 200
      4. Which materials diffused from the left beaker to the right beaker? Urea, NaCl and glucose diffused
        5. Which did not? Why? Albumin, because the molecular weight exceeded the highest MWCO membrane, thus being to large to pass through

Activity 2: Simulating Dialysis

      1. What happens to the urea concentration in the left beaker (the patient)? It is reduced to 50% travels to the right beaker and reaches equilibrium at 17 minutes
      2. Why does this occur? Because the more concentrated it became it causes the molecules to move down

keith0125 Author
wrote...
12 years ago
Thanks I still need help with the rest of the assignment I will take any help I can get  Thinking Face
wrote...
Educator
12 years ago
Thanks for helping, Lena!
lena213 Author
wrote...
12 years ago
Anytime  Slight Smile
wrote...
12 years ago
Thanks for this information!
Simple Diffusion
Activity 1: Simulating Simple diffusion

      1.What is the molecular weight of Na+? 22.9
      2. What is the molecular weight of Cl-? 35.45
      3. Which MWCO dialysis membranes allowed both of these ions through? 50, 100, and 200
      4. Which materials diffused from the left beaker to the right beaker? Urea, NaCl and glucose diffused
        5. Which did not? Why? Albumin, because the molecular weight exceeded the highest MWCO membrane, thus being to large to pass through

Activity 2: Simulating Dialysis

      1. What happens to the urea concentration in the left beaker (the patient)? It is reduced to 50% travels to the right beaker and reaches equilibrium at 17 minutes
      2. Why does this occur? Because the more concentrated it became it causes the molecules to move down


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