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What other organic compounds can be extracted from tea bags aside from caffeine? Briefly mention their biological function/s.
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- 5. In the preparation of polyurethane, what causes the solution to foam and expand in volume?Describe the layers that can form in a separatory funnel in extracting caffeine from tea leaves and the general properties of its contents.Determine if concentrated ethanol and water are incompatible. If they are incompatible, state the hazardous conditions which would result from mixing the wastes.
- Does washing your hands with soap help prevent the spread of coronavirus? The structure of soap molecules is like the lipids in the membrane layer of the virus. The soap molecules can surround the virus and remove it from the skin. It is also thought that soap molecules can disrupt the lipids in the membrane and can therefore 'disintegrate' the virus. Sodium laurate is a common soap molecule. It has the formula CHa(CH 2) 10 CO2- Na.. Sodium laurate can be produced from coconut oil and sodium hydroxide. Questions: 1. What are the reactants needed for this reaction? 2. Write down the chemical reaction in the production of sodium laurate. 3. What do you call the process in soap preparation?) In Chapter 8 (The Water Soluble Vitamins), section 8.1 (What are Vitamins) discusses Absorption, Storage and Excretion of Vitamins, both water- and fat-soluble. How readily a vitamin can be absorbed and utilized by the body is called its bioavailability. Fat-soluble vitamins require _fat__in the diet for absorption while water soluble vitamins, which include all B vitamins and vitamin ______, dissolve in water and depend on energy-requiring transport systems or need to be bound to specific molecules in the GI tract in order to be absorbed in the small intestine. Once absorbed into the blood, vitamins must be transported to the cells, mostly by being bound to _________________________ for transport. Fat soluble vitamins, which include vitamins ______, ________, _________ and _______ are incorporated into ___________________ for transport from the intestine. With the exception of vitamin B12, the water-soluble vitamins are easily excreted from the body in the urine. In contrast,…3. A bacteria is able to grow on hexadecane as a substrate: C16H34 + 16.28 O2 + 1.42 NH3 →1.65 C4.4HBO₂N8 + a CO₂ + 13.11 H₂O (a) What is the respiratory quotient (mol/mol)? (b) What is the cell formula for this microorganism? (c) Assuming 100% conversion, calculate the yield of cells from hexadecane (Yx/s) and from oxygen (YX/0₂).
- True or False: In the future, locally-grown maple syrup will likely become more available in the Midwest.Which of the following is not an example of a solid/liquid extraction? Preparation of tea from tea leaves Isolation of menthol Purification of ethanol from gasoline Purification of morphine from poppy flowers Isolation of cocaine from coca leavesAre sodium carbonate and ethanol a reagent in extracting caffeine from the tea leaves? Explain the purpose of the two.
- 17. Is caffeine an addictive substance? If so, is it psychologically addictive, physiologically addictive, or both? What about chocolate? Bubble gum? How are such distinctions made? A common scene in movies and TV programs shows the detective tasting a suspected drug powder to determine its identity. In addition to being poor laboratory practice, it is a really bad idea. Discuss and explain. 18.Box the functional group/s that contribute to the solubility (hydrophilic and lipophilic) of the given organic molecules then check whether the drug molecule is hydrophilic or lipophilic.2. Calculate the enthalpy of hydration of CuSO, if 16.34 g of CUSO, dissolves in water and gives out 55.51 kJ of heat (Q) and 25.17 g of CuSO4 • SH;O dissolves in water and absorbs 95.31 kJ of heat (Q). The molecular weight for CusO, is 160.00 g/mol, CusO, • SH;0 is 250.00 g/mol. Show ALL calculations-no calculations, no credit! CusO, (s) excess H,O Cu" (aq) so- (aq) AH1 + SH;0 АНа АНа excess H;0 CusO4 • SH20 (s)