Post-lab questions:
1. Provide the chemical structure of KHP, indicating the acidic hydrogen.  

2. Why is the solubility of KHP in water greater than many fatty acids with six or more carbons?

3. What is the chemical difference between saturated and unsaturated fats?   

4. How many moles of NaOH are in 26.7 mL of a 0.100 M NaOH solution?  

5. If the above volume of NaOH was required to titrate a fatty acid solution containing 0.753 g of an unknown fatty acid, what is the molar mass of the fatty acid?

On a lab exam, you have to find the concentrations of the monoprotic (one proton per molecule) acids HA and HB. You are given 42.6 mL of HA solution in one flask. A second flask contains 38.8 mL of HA, and you add enough HB solution to it to reach a final volume of 50.0 mL. You titrate the first HA solution with 87.3 mL of 0.0906 M NaOH and the mixture of HA and HB in the second flask with 96.4 mL of the NaOH solution. Calculate the molarity of the HA and HB solutions.

Design a buffer solution from acids listed in the table.

You need to prepare 1.50 L of buffer with pH 4.30. Show your calculations for molar calculations of acid and conjugate base, then fill in the answer table below.

Arrange the following in the order of increasing acidity. List the most acidic last.

CH3OH

CH3CO2H

CH3CH2CH2CH3

If given a table of acids and their pKas, how do you determine which acid is stronger, especially when the table does not have the compounds that are above listed on the table?

Here is a chart of the table given.

HCl pKa= -7. CH3CO2H pKa= 4.8. H2O pKa= 15.7. CH3CH2OH pKa= 16. CHCH pKa= 25. H2 pKa= 35. H2NH pKa= 38. CH2CH2 pKa= 44. CH3H pKa=50

Bio

One sentence answers would suffice

All about lipids

 Be able to list all hydrophobic macromolecules, 6 classes – fatty acids, triglycerides, phospholipids, Glycolipids, steroids, Terpenes, saturated, unsaturated, R groups in phosphoglycerides – serine, ethanolamine, choline, inositol, sphingolipids, sphingosine, cholesterol, steroid hormones, isoprene  Understand the structure and function of triglycerides, phospholipids and cholesterol.  Know what are saturated, unsaturated and trans fats  Explain how fats function as energy-storage molecules.  Apply knowledge of the structure of phospholipids to the formation of membranes.

16. You have had a drastic rapid change in pH; the protein buffer system has been activated and it:

1. uses the amine group (NH₂) as a weak base to bind H⁺ so as to raise the pH
2. can be regulated by the lungs and the kidneys
3. is an important buffer inside cells and in urine
4. uses HPO₄ to buffer strong acids
5. is the least abundant and powerful of the buffers

20. Which of the following structures do the renal calyces merge into /become?

1. Renal Hilus                                            c. Renal Pyramid
2. Renal Cortex                                         d. Renal Pelvis

At about 12 pm, before lunch, Louisa undertakes her daily exercise workout, which involves running continuously for 20 min at ~80% of her VO₂ max.

1. List the primary sources of energy production / ATP generation during the first 30 seconds of exercise. You only need to list the sources.

During the period from 5 to 20 min there would be significant changes in the utilisation of carbohydrate and fatty acids when compared to when Louisa was sitting at her desk studying (i.e. at rest). List these changes.