Lab 3: Grignard Synthesis Objective: The goal of this lab is to synthesize a Grignard reagent from bromobenzene and magnesium metal in diethyl ether. This same Grignard reagent would then be used to prepare a tertiary alcohol and then purify and characterize the product. Table of Reagents: Name Chemical formula Melting Point Boiling Point Density Safety Hazards Diethyl ether C4H10O -116.3°C 34.6°C 0.7134 g/ml Flammable Bromobenzene C6H5Br -30.6°C 156°C 1.5 g/ml
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February 16‚ 2016 Speech Fundamentals Com 103-301 Professor: Jones “The Health Complications of Tobacco Use” Specific Purpose: To inform my audience about the health risks of smoking tobacco products. Central Idea: There are numerous health hazards to smoking tobacco‚ some that many people may not be aware of. Organizational Pattern: Casual Order Introduction I. Did you know that smoking tobacco is the number one cause of lung cancer? A. You might say that is obvious‚ but what
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getting cancer. Studies have shown that this damages nonsmoker’s health against their will and could cause them to get lung cancer. Second hand smoke contains hundreds of toxic chemicals including arsenic ammonia‚ hydrogen cyanide‚ formaldehyde‚ benzene‚ and vinyl chloride. It is known to cause cancer‚ coronary heart disease‚ and respiratory problems. There is no risk- free level of exposure to secondhand smoke. Non-smokers should not be subjected to this disgusting habit. Wanting to ban smoking
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Megan Burke AGPS Period 3 June 16‚ 2011 Brownfields Investigation Statement of Problem and Hypothesis This investigation explores the effect on leaking underground storage tanks at the Getty Station (located at 1046 Boston Post Road) on contaminants located on and around Boston Post Road. In the experiment‚ the distance from the leaking storage tank will be compared to the amount of contaminant in that area‚ if any. It is predicted for this experiment that if there are leaking underground storage
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such as Down syndrome 4. Blood disorders‚ such as myelodysplastic syndrome‚ which sometimes called “preleukemia” 5. Previous treatment for cancer with chemotherapy or radiation 6. Exposure to high levels of radiation 7. Exposure to chemicals such as benzene 4-Clinical Manifestations:- Early symptoms of leukemia are caused by the decrease in the number of mature‚ functional red blood cells‚ white blood cells and platelets. These symptoms can include: • fevers or night sweats • frequent
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the unknown alcohol’s H NMR spectra‚ it can be deduced that the alcohol is 1-(3-methoxyphenyl)ethanol. There are three peaks that have a shift of ~7.0-7.5‚ one with integration values of 1‚ 2‚ and 1.This shows that the alcohol is a meta-substituted benzene ring. The singlet peak with a chemical shift of~ 4.7 ppm with an integration of 1 is from the hydrogen on the OH group. The peak at ~ 1.7 ppm corresponds to the hydrogen of the carbon that is attached to the OH group. The peak with a chemical shift
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compounds. There are also traces of carbon‚ ethane‚ hydrogen sulfide‚ neon‚ oxygen‚ phosphine‚ and sulfur. The outermost layer of the atmosphere contains crystals of frozen ammonia.[17][18] Through infrared and ultraviolet measurements‚ trace amounts of benzene and other hydrocarbons have also been found.[19] The atmospheric proportions of hydrogen and helium are very close to the theoretical composition of the primordial solar nebula. Neon in the upper atmosphere only consists of 20 parts per million
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The article refers to a study conducted by the EPA‚ which analyzed a set of seven samples of air pollutants collected throughout the town of DISH in August 2009 and found that benzene was present at levels as much as 55 times higher than allowed by the Texas Commission on Environmental Quality . Xylene and carbon disulfide (neurotoxicants)‚ along with naphthalene (a blood poison) and pyridines (potential carcinogens) all exceeded legal limits‚ as much as 384 times levels deemed safe . In order to
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NAME OF COURSE COURSE CODE CREDIT TOTAL STUDENT LEARNING HOURS PREREQUISITE LEARNING OUTCOME : : : : Organic Chemistry I CHM 3201 4 (3+1) 160 hours per semester : : None At the end of the course‚ students will be able to: 1. Define and explain the basic concepts in organic chemistry such as electronegativity‚ orbital hybridization‚ nomenclature‚ resonance and isomerism‚ as well as organic reactions mechanisms (C4‚ CTPS) 2. to conduct experiments that demonstrate the characteristic reactions
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can not simultaneously have benzenoid character (Figure 1)‚ the electrons in the pi system of the central ring react more like those of a standard diene. The reaction of the central ring in anthracene allows for the formation of two‚ independent benzene rings‚ as seen in the mechanism outlined in Figure 2. (You can hand-draw structures in ink.) Figure 1: Resonance structures of anthracene. (All figures should have captions.) xylene140 COOOOOO Figure 2: Mechanism of the Diels-Alder reaction.
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