4) Obtain stopwatch and drop a single Alka-Seltzer tablet into the cup of water and vinegar. Record how long it takes for the tablet to dissolve completely. 5) Repeat steps 1-4 for accuracy 3 times Reasoning: Alka-Seltzer was designed to dissolve in water. When dissolved in water Alka-Seltzer releases the antacid sodium citrate which reduces the amount of acid in the solution. Adding additional acid (vinegar) to the solution will determine what the rate of dissolving acid is for the antacid.
Silver nitrate tested for 2o and 3o alkyl halides expected in dibromocholesterol and sulfuric acid tested for alkenes expected in cholesterol. Bromination had 68.8% yield, debromination 73.7% yield, and overall 53.3% of commercial cholesterol was recovered as synthesized cholesterol. For commercial cholesterol, dibromocholesterol, and synthesized cholesterol, melting points were 145.2-148.1oC, 109.0-110.1oC, 146.3-148.2oC and retention factor (Rf) values were 0.69, 0.80 respectively. Chemical tests confirmed expectations, though some alkenes were present in dibromocholesterol. The similar melting points of the synthesized product as compared to the literature value; and similar Rf values for commercial and synthesized cholesterol showed the purity of
If people do get a good amount of adequate sunlight, then taking a Vitamin D supplement is not necessary. There are many good qualities about Vitamin D. There are two forms of Vitamin D when used as a supplement. There is D2 and D3. D2 is manufactured by irradiation of esgosterol in yeast. D3 is manufactured by irradiation of 7-dehydrocholesterol from lanolin and the chemical conversion of cholesterol.
Carb-Cutter; Blocker of Carbs or a Phony? Rumor has it that there is a miracle weight loss product that slows down the digestion of carbohydrates. These diet pills contain carb-cutter which blocks amylase, the enzyme that breaks down starch into glucose. With this being done, Carb-Cutter neutralizes the amylase before it starts the breakdown. This allows your body to pass starch through without turning it into glucose.
INTRODUCTION AIM: The aim of this investigation is to determine and analyse the effects of temperature and light exposure on Vitamin C concentration of a sample orange juice solution by means of volumetric analysis in conducting colorimetric titration testing. HYPOTHESIS: It is predicted that exposure of juice solutions to elevated temperatures and concentrated ultra-violet light rays, will result in increased levels of degradation of Vitamin-C due to oxidation and thus decreased concentrations of Vitamin-C in comparison to control orange juice solutions unaffected by these independent variables. BACKGROUND INFORMATION: Vitamin C, scientiﬁcally identiﬁed as L-ascorbic acid (information on the enantiomers of ascorbic acid is provided in Appendix ___),is an essential nutrient for normal growth and development of the human body and many animals. It works as a co factor for enzymes essential for synthesis of collagen proteins and also assists the body in the process of healing wound, the maintenance of bones and teeth, and important processes involving ligaments, cartilage, tendons and blood vessels. Vitamin-C is unable to be stored (due to its water solubility) or synthesized by the human body and therefore must be acquired from dietary sources; primarily citrus fruits and vegetables.
| | | | | Selected Answer: | is inhibited by alcohol | Answers: | increases urine production | | promotes dehydration | | is produced in the adenohypophysis | | is inhibited by alcohol | | | | | * Question 3 1 out of 1 points | | | Normal development of the immune response is due in part to hormones produced by the ________. | | | | | Selected Answer: | thymus gland | Answers: | adrenal medulla | | pancreas | | thyroid gland | | thymus gland | | | | | * Question 4 1 out of 1 points | | | Figure 15.1 Using Figure 15.1, match the following: Storehouse for the hormones produced by the hypothalamus of the brain. | | | | | Selected Answer: | B | Correct Answer: | | Evaluation Method | Correct Answer | Case Sensitivity | Exact Match | B | | | | | | | * Question 5 1 out of 1 points | | | Gluconeogenesis occurs in the liver due to the action of ________. | | | | | Selected Answer: | cortisol | Answers: | aldosterone | | insulin | | secretin | | cortisol | | | | | * Question 6 1 out of 1 points | | | Figure 15.1 Using Figure 15.1, match the following: Produces hormones and is considered a neuroendocrine organ. | | | | | Selected Answer: | A | Correct Answer: | | Evaluation Method | Correct Answer | Case Sensitivity | Exact Match | A | | | | | | | * Question 7 1 out of 1 points | | | Figure 15.2 Using Figure 15.2, match the following
Exercise 10: Acid-Base Balance: Activity 3: Renal Responses to Respiratory Acidosis and Respiratory Alkalosis Lab Report Pre-lab Quiz Results You have not completed the Pre-lab Quiz. 07/18/13 page 1 Experiment Results Predict Question: Predict Question 1: What effect do you think lowering the PCO2 will have on [H+ ] and [HCO3- ] in the urine? Your answer : d. [H+ ] will decrease and [HCO3- ] will increase. Predict Question 2: What effect do you think raising the PCO2 will have on [H+ ] and [HCO3- ] in the urine? Your answer : c. [H+ ] will increase and [HCO3- ] will decrease.
(TCO 7) Which water-soluble vitamin can regenerate Vitamin E after it has been oxidized? Question 9. (TCO 7) How do antioxidant vitamins stabilize free radicals? Question 10. (TCO 8) Which of the following statements is FALSE regarding the mineral, selenium?
Running head: A Patient Conversation Cholesterol: A Patient Conversation SC121-04 Explaining Cholesterol to a Patient Keeping an eye on your cholesterol is very important to your overall health and life. If you have high cholesterol it could put you at risk for many health concerns such as heart attack and stroke. High cholesterol allows fatty deposits to develop in your blood vessels which slow the flow of blood in your arteries ("High cholesterol Definition - Diseases and Conditions - Mayo Clinic," 2014). Although high cholesterol can be genetic, most of the time it is a result of the way you live and things you eat. Eating healthy and getting regular exercise can go a long way to staying healthy and sometimes medication can help reduce cholesterol.
Ibuprofen H. Other medications 15. Diuretics and antibiotics 16. Antihypertensives and corticosteroids Kelli Mosley Nausha Campbell English Composition 162 27 January 2009 Let the Wind Blow Gas is a normal function of the body. The average human releases one to three pints of flatus in 12 to 25 episodes throughout the day. The primary constituents of flatulence are collectively, nitrogen (ingested), methane (produced by anaerobic microbes), oxygen (ingested), carbon dioxide (produced by aerobic microbes or ingested), and hydrogen (produced by some microbes and consumed by others).