Hamdiya Mumade Partner: Isabella CHEM 253 TA: Pinky Chowdhury Oct 15‚ 2024 Lab 9: Stereochemistry and Polarimetry Purpose: To determine the concentration of three different vitamins by making a series of serial dilutions and using HPLC. Theory: Here?s a theory section for your lab report on stereochemistry and polarimetry. Theory Stereochemistry involves the study of how the spatial arrangement of atoms in a molecule influences its chemical and physical properties. Molecules with the same molecular
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In conclusion to the distillation lab‚ I think our data shows that our experiment went well. Our graph resembles the graph in the lab handout (graphs attached to lab notebook sheets). The fractional distillation shows the sharp slope between when the cyclohexane burns off and mostly only toluene remains. The microscale graph seems to be accurate because it shows the large jump where the cyclohexane is burned off. To view the apparatuses used in the experiment look at the attached pictures. To
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Discussion: Continuous distillation‚ a form of distillation‚ is an ongoing separation in which a mixture is continuously (without interruption) fed into the process and separated fractions are removed continuously as output streams. A distillation is the separation or partial separation of a liquid feed mixture into components or fractions by selective boiling (or evaporation) and condensation. A distillation produces at least two output fractions. These fractions include at least one volatile
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CLASSIFICATION TESTS A. Acids There are relatively few suitable tests for carboxylic acids. Classification is based mostly upon solubility tests. If the compound is water soluble‚ test the aqueous solution of your compound with pH paper (also check the pH of the original water). If the compound is water-insoluble and it dissolves in 5% (1.5M) sodium hydroxide and 5% NaHCO3 solutions as performed in your solubility tests‚ it can be classified as a carboxylic acid. Establish an equivalence value
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other words‚ we created the perfect eco-friendly bouncy ball. The materials we used to create this eco-friendly ball were polyvinyl alcohol (PVA) and polyvinyl acetate (PVAc) and we reacted them with sodium borate (borax). Polyvinyl acetate (PVA) is a water-soluble synthetic polymer. It has the idealized formula [CH2CH]n. Polyvinyl acetate (PVA) is a synthetic resin polymer. The chemical formula of this component is (C4H6O2)n. The last component is sodium borate (Borax). It is an important boron
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Rayon is a manufactured regenerated cellulose fiber. Because it is produced from naturally occurring polymers‚ it is neither a truly synthetic fiber nor a natural fiber; it is a semi-synthetic[1] fiber. Rayon Fiber Characteristics o Highly absorbent o Soft and comfortable o Easy to dye o Drapes well Some Major Rayon Fiber Uses • Apparel: Accessories‚ blouses‚ dresses‚ jackets‚ lingerie‚ linings‚ millinery‚ slacks‚ sportshirts‚ sportswear‚ suits
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(reference the list of simple alkanes) e. Circle the branches. f. Name and number the branches‚ forward to backward. Use the lowest set of numbers. g. if the branches are different their names are put in alphabetical order. Butyl‚ ethyl‚ methyl‚ propyl Note: If 2 identical groups = di If 3 identical groups = tri If 4 identical groups = tetra If 5 identical groups = penta If 6 identical groups = hexa If 7 identical groups = hepta 5. Consider this compound
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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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Microbial Cell Factories BioMed Central Open Access Research Metabolic engineering of Saccharomyces cerevisiae for the production of n-butanol Eric J Steen1‚2‚ Rossana Chan1‚3‚ Nilu Prasad1‚3‚ Samuel Myers1‚3‚ Christopher J Petzold1‚3‚ Alyssa Redding1‚3‚ Mario Ouellet1‚3 and Jay D Keasling*1‚2‚3‚4 Address: 1Joint BioEnergy Institute‚ 5885 Hollis Avenue‚ Emeryville‚ CA 94608‚ USA‚ 2Department of Bioengineering‚ University of California‚ Berkeley‚ CA 94720‚ USA‚ 3Physical Biosciences
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utilized in chemical castration are cyproterone acetate‚ medroxyprogesterone‚
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