is used in medications to relieve the symptoms of asthma. The guinea pig is another animal used in the research of asthma. An asthma model in guinea pigs has been developed for human asthma research purposes. By treating the guinea pigs with 2‚4-toluene diisocyanate (TDI) for about ten weeks‚ the guinea pigs suffer from labored breathing‚ a symptom associated with bronchiole asthma in humans‚ Further research using asthma-induced guinea pigs should aid in the discovery of new treatments and cures
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b(4.5) Preparation of Salts – Reactions with Acids: Learn these General Equations and their Examples: 1. ACID + METAL –––––––> SALT + HYDROGEN Hydrochloric acid + Magnesium Magnesium Chloride + Hydrogen 2HCl(aq) + 2Mg(s) 2MgCl(aq) + H2(g) Sulphuric acid + Zinc Zinc Sulphate + Hydrogen H2SO4(aq) + Zn(s) ZnSO4(aq) + H2(g) Nitric acid + Aluminium Aluminium Nitrate + Hydrogen 2HNO3(aq) + 2Al(s) 2AlNO3(aq) + H2(g) 2. ACID + BASE –––––––> SALT + WATER Hydrochloric
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across the plate. Each solid on the different watch glasses were scraped to obtain a small sample and placed into test tubes to be dissolved in acetone once again. A TLC chamber was then assembled by using a beaker slightly filled with solvent‚ 3:6:1 Toluene: EF2O: MeOH. Plates were then spotted along the line at the bottom‚ using capillary tubes‚ each with a sample of acetaminophen‚ acetylsalicylic acid‚ and caffeine. Then each plate was individually spotted with a different pill sample that was dissolved
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Chem 3650 Organic II Lab Lecture Summer 2013 Instructor: Victoria Dougherty M.S. Victoria Dougherty M.S. Office: BSE 1.340 Phone: 458-5473 (I do not have voicemail) Office Hours: Tuesday and Thursday: noon – 1:00 pm (or by appointment) Monday and Wednesday: 1:00 pm to 2:00 pm E-mail: victoria.dougherty@utsa.edu (put Chem 3650 in subject) Lab instructors and sections: Lab instructors Email (put Chem 3652 in subject) Section(s) Times Marilyn Wooten PhD. marilyn.wooten@gmail.com 01T 7:30–11:20
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as flammable have flash points below 100 degrees Fahrenheit. At normal room temperature‚ flammable liquids are a much greater fire hazard than combustible liquids. Flammables include lacquer thinner‚ turpentine‚ acetone‚ ether‚ alcohol‚ gasoline‚ toluene and shellac. For example‚ ethyl ether (a common solvent) has a flash point (FP) of –49 deg. F and acetone has a FP of 0 deg. F. Combustibles: These liquids have vapors which burn when heated above 100 deg. F. Combustibles include fuel oil‚ kerosene
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Alkyl Halides Alkyl halides are a class of compounds where a halogen atom or atoms are bound to an sp3 orbital of an alkyl group. CHCl3 (Chloroform: organic solvent) CF2Cl2 (Freon-12: refrigerant CFC) CF3CHClBr (Halothane: anesthetic) Halogen atoms are more electronegative than carbon atoms‚ and so the C-Hal bond is polarized. H H μ C + C-l δ δ H The C-X bond is polarized in such a way that there is partial positive charge on the carbon and partial negative charge on the halogen. Dipole moment
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aniline and a number of its allied products is fairly familiar. The first hazard we meet in the dye industry is from strong adds‚ such as nitric and sulphuric or a mixture of these two known as mixed acid. These are used to nitrate the benzine or toluene‚ etc. Their destructiveness to the human tissues is well known and every precaution is taken to prevent these acids from getting on the skin of the workmen. When acid does get on the workman he quickly knows it by the pain it causes‚ and he immediately
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Flower power Introduction Perfumes and scented products are composed of toxic chemicals like acetone‚ toluene‚ ethyl acetate‚ formaldehyde and ethanol that are found on any list of toxic and hazardous chemicals. All these and other chemicals used in the manufacture of personal care products have been shown in animal studies to cause serious health problems and even death. That’s why we decided to create a natural perfume that is safe for the environment. So we thought that we must encourage
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Substance abuse- Inhalants The term substance refers to chemical compound that are ingested in order to alter mood or behavior. Substance use: It is the ingestion of psycho active substance (which alters mood or behavior) in moderate amount that does not significantly interfere with social‚ educational or occupational functioning. Eg: Drinking a cup of coffee in the morning in order to wake up. Substance intoxication: It means our physiological reaction to ingested substances that is getting high
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weighed again. A developing chamber by outfitting a 100 mL beaker‚ and a watch glass for a lid was then prepared. Dveloping solvent was added to the chamber to a depth of no more than ½ cm. The mobile phase for ferrocene:acetylferrocene is 30:1 toluene :
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