LEARNING LOG 2: Observe‚ Connect and Reflect on Your Learning PART III – Symmetry in Crystals The most striking examples of symmetry…are crystals. Herman Weyl Period Focus Image Question Your Observations Complete at the end of Week 5 Image 5 Uvarovite is a gemstone rich in chromium. What are your main observations about uvarovite symmetry from studying the external form? (30 - 40 words) (2 marks) What is your personal favourite gemstone and what is its space group. (up to
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Discussion: In this experiment‚ we alkylate sodium saccharin to N-ethylsaccharin with iodoethane in an aprotic solvent N‚N dimethylformamide. Nucleophiles in this experiment will react better in an aprotic solvent. Aprotic solvents have dipoles due to its polar bonds but they do not have H atoms that can be donated into a H-bond. The anions which are the O- and N- of sodium saccharin are not solvated therefore are “naked” and the reaction is not inhibited and preceded in an accelerated rate.
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Chapter 18 Ethers & Epoxides; Thiols and Sulfides Assigned Reading from McMurry: Read Sections 18.1 through 18.9; not responsible for “Focus on … Epoxy Resins & Adhesives‚ pp. 697-698). Recommended Problems from McMurry: 18.1a-e;18.18.2;18.3a-d; 18.4; 18.5a-d; 18.6a-b; 18.7a-b; 18.8; 18.9; 18.10; 18.11; 18.12a‚b; 18.13a‚b; 18.14a-c; 18.16a-f; 18.17; 18.18; 18.19a-c; 18.20; 18.21; 18.22; 18.23a-e; 18.24a-I; 18.25a-f; 18.26a-d; 18.27; 18.28; 18.29ad; 18.30a-e; 18.31; 18.32; 18.33; 18.34; 18
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similar to those of composite resins‚ which are tooth-colored materials used for fillings. Composite resins contain quartz (a hard rock-forming mineral)‚ glass‚ silica (a white colorless crystalline compound) and colorants. Zinc Oxide-Eugenol Cement Zinc oxide-eugenol cement can be used to temporarily or permanently cement cast restoration or appliances. The liquid in zinc
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NOTES ON QUANTUM COMPUTING AND RELATED TOPICS Abstract These notes are intended as a simple introduction to the new field of quantum computing‚ quantum information theory and quantum cryptography. Undergraduate level quantum mechanics and mathematics is required for an understanding of these lectures. After an introduction to qubits and quantum registers‚ we introduce the key topics of entangled states and quantum logic gates. For two qubit states‚ we introduce the four Bell states as
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split injection from the machine that passed helium gas into the vaporized clove oil to lower the concentration. This is because prior to the the split injection and addition of helium gas‚ the concentration of the clove oil was too high to process. Eugenol and beta- caryophyllene were expected to have a high percent composition as they are the two major components in clove oil. Before the percentages could be determined‚ a new total area from the graph needed to be calculated. This was because a portion
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SC/CHEM 3001 3.0 Experimental Chemistry II Experiment A4: Palladium Catalysis: The Suzuki Reaction Abstract In this experiment‚ the Suzuki reaction was performed using phenylboronic acid‚ p-iodophenol and Pd/C catalysis in potassium carbonate aqueous media to synthesize biphenyl-4-ol. The yield of final product was only 11.94% and the measured melting point was 170-175℃. Since the appearance of the product was significantly different from expected light tan color and the measured melting
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Chemistry 3373F Lab Manual 2008 Modified 11/07 Table of Contents Chem 3373 Laboratory Schedule for Fall 2008.............................................................................2 The Benzoin Condensation of Benzaldehyde ..............................................................................3 Synthesis of Dilantin and Related Compounds (two weeks).........................................................6 Synthesis of an Alkaloid: Pseudopelletierine (two weeks) .............
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formation of the nitronium ion. AS shown on the mechanism is shown below‚ the carbonmethoxy group directs the nitronium ion to a position of meta. For example‚ formation of carbonation intermediate yields a resonance stabilized structure of the proton. NO2 H3CO O H3CO O H3CO O H3CO O O N O NO2 H NO2 NO2 NO2 H H3CO O H3CO O HSO4 NO2 NO2 H2SO4 Procedure: The procedure is outlined is “the laboratory Manual for Organic Chemistry 2311”
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structure include; IR spectroscopy‚ thin layer chromatography (TLC)‚ and CHN analysis. A radical copolymerization reaction was conducted‚ with the initiation by radical initiator 1‚1’-azobiscyclohexanecarbonitrile. CHN analysis‚ IR spectroscopy‚ and Proton NMR analysis were used to prove its composition and structure. 1. Introduction The American Chemical Society databases were investigated through Scifinder Scholar Version X to find any information about Butyl 2-Cyano-(3‚5 dichloro-phenyl)-2-propenoate
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