Social Alchemy 2nd Quarter / SY 2012 – 2013 Eng’r. Josephine A. Ng CHM142L/B21 Concepcion‚ Jermin B. Group# 2 Experiment No. 1 ------------------------------------------------- MELTING POINT AND BOILING POINT OF ORGANIC COMPOUNDS ------------------------------------------------- ABSTRACT The melting point (MP) and the boiling point (BP) are probably the most widely used physical constant in the field of science. Determining the boiling point and the melting point of a compound helps you to characterize
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Fantastic Voyage Lisa Whitfield HS 130 Anatomy and Physiology II Unit 9 Kaplan University 5/20/13 Fantastic Voyage The gastrointestinal tract starts with the mouth‚ which leads to the gullet via the stomach‚ small intestine‚ large intestine‚ and ends at the anus. In due course of the journey‚ the ingested food is broken down by both physical and chemical means to release nutrients which are absorbed into the blood stream. The ingested food is physically broken down in the mouth
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Pseudomonas aeruginosa(P.aeruginosa)‚ and Salmonella typhimurium (S.typhimurium). The biochemical tests utilized were; Triple Sugar Iron Agar (TSIA) test‚ Sulfur Indole Motility (SIM) test‚ Methyl red test and Voges-Proskauer (MR-VP) test‚ Citrate test‚ Urea test‚
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right beaker? Na+/Cl-‚ Urea‚ Glucose 5. Which did not? Why? Albumin did not diffuse from the left to the right beaker. The conclusion is that Albumin is a polar substance. Polar substances have a much lower solubility in the membrane phospholipids. Certain compounds that are intermediates of metabolism are not usually allowed through the membrane‚ as they are often ionized and contain groups such as phosphate. Activity 2: Simulating Dialysis 6. What happens to the urea concentration in the
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need for increase of temperature. Data Analysis: If we look at the two charts and compare and contrast. There were first of all three trials given in the individual solutions chart. The three trials gave the same results. The ideal data was off for Urea by one point and cholesterol that was off by 2 points
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Homeostasis literally means “same state” and it refers to the process of keeping the internal body environment in a steady state‚ when the external environment is changed. The importance of this cannot be over-stressed‚ as it allows enzymes etc to be ‘fine-tuned’ to a particular set of conditions‚ and so to operate more efficiently. Much of the hormone system and autonomic nervous systems is dedicated to homeostasis‚ and their action is coordinated by the hypothalamus. In Module 2 we saw how
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Melting Point Determination Identity and Purity of Solid Organic Compounds Objectives • To introduce the technique of melting point determination. • To use the concept of melting points for identification and characterization of organic compounds. • Properly fill and use a capillary melting point tube. • Determine accurate melting point ranges for a wide variety of organic substances. Introduction The melting point of a solid can easily and accurately be determined
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right beaker and either the 100 MWCO or 200 MWCO membrane will remove urea from the left beaker and leave albumin If the left beaker contains NaCl‚ urea‚ and albumin‚ you can selectively remove urea by dispensing a concentration of NaCl into the right beaker equivalent to that in the left beaker and by using the 100 or 200 MWCO membrane. Albumin is too large to diffuse and there will be no net diffusion of NaCl. However‚ urea will move down its concentration gradient into the right beaker. Activity
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catalyses the hydrolysis of urea to form ammonia and carbon dioxide: urea + water carbon dioxide + ammonia Some fertilisers added to soils to help crop growth contain urea. Although some crop plants can absorb ammonium ions‚ most obtain their source of nitrogen as nitrate ions. The activity of urease can be measured by following the increase in pH as ammonia is produced in the reaction. A student was provided with urease extracted from bacteria and solutions of urea and two chemical inhibitors
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Medullary Osmotic Gradient 2. Identify the three factors in the nephron determine the osmotic gradient. 1- Differences in water and solute permeability and reabsorption in different sections of the limbs of the loop of Henle 2- Urea cycling in the medulla 3- Countercurrent exchange of fluid in the vasa recta 3. Countercurrent Multiplier a. Active transport of solutes is the primary cause of medullary osmotic gradient. Describe‚ for example‚ ion activities along the ascending
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