Student
CHEM 309: Integrated General, Organic, and Biological Chemistry: Spring 2011
Test # 3
You have 60 minutes to complete the exam – manage your time accordingly. An ambiguous or illegible answer is a wrong answer. Please read the directions carefully as most questions have several parts. Please do not begin until asked to do so. __________________ print your name here
Pg # 3 (25 pts)
Pg # 4 (21 pts)
Pg # 5 (30 pts)
Pg # 6 (24 pts)
1
2
1. (4) If 15.0 g of CaCl2 are present in 250 mL of aqueous solution. What is the concentration in terms of: (Show work!) a. (w/v)%
b. ppm
2. (3) The serum concentration of phosphate ion (PO43-) for a patient is 3.0 mEq/L. Convert this concentration to mmol/L. Show unit factor analysis.
3. (3) When 0.50 mL of a water sample was diluted to 1.0 L, the lead (Pb) content in this new solution was determined to be 7.5 ppb. What was the lead concentration in the original water sample? Show work!
4. (9) State whether each of the following samples are isotonic, hypotonic or hypertonic compared to red blood cells. Predict the effect on a red blood cell (crenation, hemolysis, or none) that the following solutions would have: Sample 2% glucose solution 2% NaCl solution Pure H2O Isotonic/hypotonic/hypertonic? Crenation/hemolysis/none? hypotonic hypertonic hypotonic hemolysis crenation hemolysis
5. (6) Describe how an artificial kidney separates waste products from blood?
3
6. (3) Construct a triglyceride from 3 units of stearic acid and one unit of glycerol.
7. (3) Predict if the triglyceride is likely to be an oil or fat. Explain.
8. (3)Why is a vegetable oil easier to digest than animal fat?
9. Answer the following questions based on Stearic acid: a. (1) Identify the type of reaction in step 3 of the spiral. b. (1) Identify the type of reaction in step 2 of the spiral. c. (1) How many spirals (cuts) does the fatty acid go through when activated and undergoes catabolism?
Test # 3
You have 60 minutes to complete the exam – manage your time accordingly. An ambiguous or illegible answer is a wrong answer. Please read the directions carefully as most questions have several parts. Please do not begin until asked to do so. __________________ print your name here
Pg # 3 (25 pts)
Pg # 4 (21 pts)
Pg # 5 (30 pts)
Pg # 6 (24 pts)
1
2
1. (4) If 15.0 g of CaCl2 are present in 250 mL of aqueous solution. What is the concentration in terms of: (Show work!) a. (w/v)%
b. ppm
2. (3) The serum concentration of phosphate ion (PO43-) for a patient is 3.0 mEq/L. Convert this concentration to mmol/L. Show unit factor analysis.
3. (3) When 0.50 mL of a water sample was diluted to 1.0 L, the lead (Pb) content in this new solution was determined to be 7.5 ppb. What was the lead concentration in the original water sample? Show work!
4. (9) State whether each of the following samples are isotonic, hypotonic or hypertonic compared to red blood cells. Predict the effect on a red blood cell (crenation, hemolysis, or none) that the following solutions would have: Sample 2% glucose solution 2% NaCl solution Pure H2O Isotonic/hypotonic/hypertonic? Crenation/hemolysis/none? hypotonic hypertonic hypotonic hemolysis crenation hemolysis
5. (6) Describe how an artificial kidney separates waste products from blood?
3
6. (3) Construct a triglyceride from 3 units of stearic acid and one unit of glycerol.
7. (3) Predict if the triglyceride is likely to be an oil or fat. Explain.
8. (3)Why is a vegetable oil easier to digest than animal fat?
9. Answer the following questions based on Stearic acid: a. (1) Identify the type of reaction in step 3 of the spiral. b. (1) Identify the type of reaction in step 2 of the spiral. c. (1) How many spirals (cuts) does the fatty acid go through when activated and undergoes catabolism?