Experiment # 1 Date: 18/12/13 Title: Chemical Properties of Alkanes. Aim: To test the reactivity of alkanes using cyclohexane as an example. Apparatus/Materials: Cyclohexane‚ liquid alkane‚ aqueous bromine‚ test tubes‚ light source‚ watch glass‚ splint‚ 0.1 MKMnO4‚ concentrated H2SO4‚ dilute H2SO4. Method: Combustion: 1. A watch glass was placed on a benched protection sheet in a fume cupboard and the extractor in the fume on. 2. 4 drops of cyclohexane was placed on the watch glass using
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INTERNATIONALE PHARMACEUTICA SCIENCIA | Jan-March 2011 | Vol. 1 | Issue 1 | Available online http://www.ipharmsciencia.com ©2011 IPS REVIEW ARTICLE Phytochemical screening and Extraction: A Review ABSTRACT Plants are a source of large amount of drugs comprising to different groups such as antispasmodics‚ emetics‚ anti-cancer‚ antimicrobials etc. A large number of the plants are claimed to possess the antibiotic properties in the traditional system and are also used extensively by the tribal people
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Properties of Alcohols and Phenols Experiment #3 Objectives: To observe the solubility of alcohols relative to their chemical structure‚ to perform chemical tests to distinguish primary‚ secondary and tertiary alcohols‚ and a color test for phenol. Introduction The general formula of an alcohol is ROH in which the R is an aliphatic hydrocarbon group. Alcohols may be looked upon as derivatives of water‚ HOH. One hydrogen of water is substituted by an alkyl group‚ R. Like water‚ alcohols show hydrogen
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Our data displayed supports the notion that by increasing the acidity of the catalyst‚ the production of aspirin will increase. Our hypothesis was proven correct. In our data‚ we calculated the percent yield and percent error of each trial. We also calculated the average of the percent yields and the percent errors of each catalyst. In the end‚ we saw that for the sulphuric acid catalyzed aspirin‚ we saw an average of 69.7% percent yield and an average 30.3% percent error. As for the phosphoric acid
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Name____________________ Comparing Rates of Evaporation Several factors determine how fast a sample of liquid will evaporate. The volume of the sample is a key factor. A drop of water takes less time to evaporate than a liter of water. The amount of energy supplied to the sample is another factor. In this lab‚ you will investigate how the type of liquid and temperature affect the rate of evaporation. Problem: How do intermolecular forces affect the evaporation rates of liquids? Pre-Lab:
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with C‚ Y‚ B and G. Each of the concentrated pigments was dabbed onto their respective rows on each of the three TLC plates using a plastic pipet tip. 3 TLC chambers were prepared using 7mL of each different mobile phase (9:1‚ 8:2 and 7:3 pet ether: acetone solution). The TLC’s were performed and Rf values were measured. All materials were disposed of properly and all glassware was cleaned following correct laboratory
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Symptoms of Diabetic Ketoacidosis Blood Glucose: >300 mg/dL Flushed face Ketonemia & acidosis with blood pH: < 7.3 Serum bicarbonate level < 15 mEq/L Kussmaul Respirations Nausea Vomiting Polyuria Abdominal Pain Fruity Breath Odor (acetone) Electrolyte imbalance If DKA untreated: Possibly Fatal Treatment for DKA IV fluids to treat dehydration & balance electrolytes Insulin to lower blood glucose level & stop production of ketones Treatment for Type 1 Diabetes Medication
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Anoxic Brain Injury impaired physical mobility r/t muscle weakness and disease process self care deficit: dressing and grooming r/t cognitive impairment chronic confusion r/t impaired decision making ineffective coping r/t impaired information processing noncompliance with nursing staff r/t behavior problem due to mental decline impaired verbal communication r/t aphasia-speech deficit risk for falls r/t muscle weakness risk for impaired skin integrity r/t bedridden/chairbound
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longer with the polar adsorbent‚ while the least polar compound travels with the eluent that is lower in polarity. 2. TLC in today’s experiment stands for Thin Layer Chromatography. 3. From least polar to the most polar: Heptane-Toluene-Acetone-Methanol-Acetic acid ‚ ‚ ‚ ‚ 4. The Rf (Retardation factor) is the ratio of the distance that the compound/mixture traveled to the distance the solvent/mobile phase traveled. 5. From least Rf to the highest Rf: Benzoic acid – Benzaladehyde
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In chemistry‚ an alcohol is an organic compound in which the hydroxyl functional group (-OH) is bound to a carbon atom. In particular‚ this carbon center should be saturated‚ having single bonds to three other atoms.[1] An important class of alcohols are the simple acyclic alcohols‚ the general formula for which is CnH2n+1OH. Of those‚ ethanol (C2H5OH) is the type of alcohol found in alcoholic beverages‚ and in common speech the word alcohol refers specifically to ethanol. Other alcohols are usually
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