Review Questions 1. What are club drugs? What are some of the factors that support the use of club drugs? 2. What are screening tests? Why are they used? 3. What are color tests? Why are these tests used? 4. What are microcrystalline tests? What information do they provide? 5. What is spectrophotometry? How can this be useful in identifying drugs? Critical Thinking Questions 1. Why are forensic scientists an important part of drug cases? 2. If you were a forensic scientist and you were called
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Polish the zinc strip using steel wool and then determine its mass. Allow the strip to sit in lead acetate for approximately an hour and observe the changes in the zinc strip. The zinc starts to accumulate particulate matter (lead particles) on its surface. This is cause by the chemical reaction that occurs between the lead acetate and the zinc strip. The strip is then rinsed in water and acetate and then dried. The particles of lead are scraped off the strip and dried thoroughly and then weighed
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of increase acidity‚ instability as well as decrease HHV‚ effectively converted into acetic acid‚ ethyl ester‚ or was separated in light oil phase when using ethanol as solvent. When ethanol was hydrodeoxygenated with noble metal catalyst‚ 72.4 % of ethanol converted into gas and only 27.6 % was left. It contained a certain level of ethyl ester (such as acetic acid‚ ethyl ester and propanoic acid‚ ethyl ester). Therefore‚ ethanol was concerned to the HDO reaction as co-reactant (convert acid in bio-oil
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of this lab is to demonstrate freezing point depression by dissolving salt into two liquids and monitoring temperature. Materials: test tube‚ Thermometer‚ 10 mL graduated cylinder‚ 2 micropipettes‚ Styrofoam cups‚ 4 pieces plastic wrap‚ 70% ethyl rubbing alcohol‚ 91% isopropyl rubbing alcohol‚ ice‚ distilled water‚ rock salt Procedure: Using the graduated cylinder‚ measure 2 mL of alcohol and pour it into the test tube. Add 10 mL of distilled water to the test tube also. Put the thermometer
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utilized in chemical castration are cyproterone acetate‚ medroxyprogesterone‚
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how much they resist changes to pH. This is accomplished by having ten graduated beakers: two containing pure water‚ two with .1 M Sodium Chloride‚ two with 1 gram of solid sodium acetate dissolved in acetic acid‚ two with 5 grams of solid sodium acetate dissolved in acetic acid‚ and two with 10 grams of solid sodium acetate dissolved in acetic acid. These are split into two groups of five containing one of each solution. The pH of each solution is then measured and a pipette is used to distribute 1
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Experiment 5 Title : Thin Layer Chromatography Objectives: i. To distinguish polar and non-polar solvents. ii. To familiar with the analysis technique by using the thin layer chromatography. iii. To differentiate the retention factor‚ Rf for different compounds. [pic] Result: |Compound |Distance traveled by the compound | |o-nitroanaline |2.45
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Choose the one best response to questions as follow: • The miracidial hatching test helps to demonstrate the viability of: B • eggs of Taenia species. • eggs of Schistosoma species. • eggs of hookworm species. • eggs of Opisthorchis. • After India ink injection‚ the gravid proglottids of which cestode contain seven to thirteen branches on each side? B • Taenia saginata • Taenia solium • Diphyllobothrium latum • Dipylidium caninum • A parasitic infection that may be diagnosed by the examination
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grapes were gathered and were classified as Vitis vinifera. The skin was separated from the fruit and was placed in dark‚ cool area. To avoid oxidation of the plant extract‚ the steps were done away from direct light. The skin was shaken with ethyl acetate and was kept for 72 hours and was filtered. The filtrate was dried using a rotary evaporator to get one-tenth of its original amount. The functional and phenolic groups present in the resveratrol were tested using standard methods. Aromaticity
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Experiment 19: Fischer Esterification‚ Conclusion The objective in this experiment was to efficiently perform an Fischer esterification of 1-butanol and acetic acid to form water and n-butyl acetate‚ and to confirm the esterification using IR spectroscopy analysis. It was found that 0.734 grams of n-butyl acetate was formed with a percent yield of 61%. The product was confirmed using IR spectroscopy and boiling point confirmation. The reaction mechanism for this specific reaction was as follows: First
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