Auxochrome molecules are comprised of groups such as amino‚ alkoxy‚ phenolic‚ sulfonyl‚ and carboxyl. Some examples of dyes are Malachite Green-which includes an amine group and ammonium‚ Para red-which includes nitro‚ azo benzene‚ phenol‚ and Congo red which includes an amino group‚ azo benzene‚ and sulfonate. Some molecules are colorless (azo compounds) or do not absorb dyes easily‚ therefore they conjugate. To understand conjugation‚ it is important to understand groups connect in such a way that makes
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BIOFERTILIZER: The pathophysiology of the Tuberculin reaction is explained thus: M. Tuberculi are engulfed by macrophages after being identified as foreign‚ but due to a self- preserving mechanism peculiar to TB it is able to block the fusion of the phagosome within which it is existing with the lysosome which would destroy it. So it can continue existing and replicating within the immune cell designed to destroy it. After several weeks‚ the immune system somehow [ mechanism as yet unexplained]
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Uses of coal: Coal is used as a fuel because it burns easily and has high calorific value. It is used to make other fuels like coal gas‚ synthetic petrol‚ methane and coke Coal is used in the manufacture of industrially useful compounds like benzene‚ phenol‚ naphthalene‚ etc. Ø Destructive Distillation of Coal: On strong heating coal in a closed tube it breaks down into different components such as coal gas‚ coal tar‚
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Knowledge within a discipline develops according to the principles of natural selection.” How useful is this metaphor? KQ- To what extent does knowledge need to evolve in discipline to different areas of understanding? Thesis statement- knowledge is both provisional and contextual while natural selection is the key aspect of variation‚ selection and fitness. Knowledge applied in everyday lives in different ways of knowing‚ how long could it persist if we as humans keep finding the best of what we
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Hydrofracking is a new development in natural gas extraction. In addition‚ hydrofracking refers to hydraulic fracturing‚ a technique in which large amounts of water‚ combined with smaller amounts of chemicals and sand‚ are pumped under high pressure into a drilled gas well. However‚ concerns have been raised regarding with this is the fact that the drills can hit water sources and contaminate our water. Between hitting water sources and releasing greenhouse gasses‚ the process of hydraulic fracturing
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Assignment 10: Environmental Health Aaron CottonBetteridge (10576005) Go to Air Pollution: List 5 gases found on this link ● ● ● ● ● ● Benzene Perchloroethylene Methylene chloride Dioxin Asbestos Toluene Go to Acid Rain: What are the two major gases that are responsible for Acid Rain? Sulfur dioxide (SO ) and nitrogen oxides (NO ) are the two major gases that are responsible for 2 x Acid Rain. Go to Lead: What are 4 health effects listed as consequences of Lead Poisoning?
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Asian Journal of Applied Sciences (ISSN: 2321 – 0893) Volume 02 – Issue 01‚ February 2014 Quality of Oleoresinous Wood Varnish Prepared using Resin Synthesized from Tannin Extracted from Stem Bark of Khaya senegalensis Osei Akoto1 and Anthony Osei-Brefoh2 1 Department of Chemistry‚ Kwame Nkrumah University of Science and Technology Kumasi‚ Ghana 2 Department of Chemistry‚ Kwame Nkrumah University of Science and Technology Kumasi‚ Ghana __________________________________________
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smoking in public places dangerous A. smoking is dangerous for human health it can cause lung cancer‚ leukemia‚ and pneomonia 1. Carcinogens which are ingredients in cigarettes that has the potential to cause lung cancer. 2. A chemical called Benzene a known carcinogen in cigarette smoke is the leading cause of leukemia. 3. Smoking causes fatal diseases to develop in many parts of the body including the respiratory tract causing pneumonia. IV. Smoking is a Bad Influence
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information. 3. Calculate the molal freezing point depression constant Kf for 1-octadecanol using: Tf = 57.95 oC‚ Hfus = 74.047 kJ mol-1‚ and M = 270.5 g mol-1. ΔTf = Kf m 4. A polymer chemist dissolves 20.00g of polystyrene in 1.000L of benzene. The solution is found to generate an osmotic pressure of 1.000 kPa at 298.0K. Calculate the average molecular weight of the polystyrene. Recall that one Pascal x Meter3 equals one Joule. 5. Ex. 5.22(a) 6. Examine Figure 5.35. Assume
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degrees of unsaturation formula‚ Eq. 1‚ was applied‚ and the molecule was found to have 4 degrees of unsaturation. : [(2 + 2(9) – 12)/2] = 4. It was noted that this is highly suggestive of a benzene ring‚ so the IR spectroscopy was analyzed for the presence of a benzene ring functional group. Aromatic benzene rings typically show IR peaks in the 1400-1500 and 3000-3100 cm-1 range. The signals seen on the IR of the unknown at 1454 and 3028 cm-1 range confirm the presence of an aromatic ring. Further
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