To design and implement data warehouse for a mall management system. DWs are central repositories of integrated data from one or more disparate sources. They store current and historical data and are used for creating analytical reports for knowledge workers throughout the enterprise. Examples of reports could range from annual and quarterly comparisons and trends to detailed daily sales analyses.
Comment on your results. What is the best method for determining if two compounds are the same? Under the circumstances, how will the observed melting compare to the true melting point. Is your unknown compound A with a reported melting point of The book procedure is to be modified as detailed below.
There is one acid-base reaction to include in the reaction section. Rather than starting with two tablets of Excedrin, you will be starting with a mixture of pure acetaminophen, aspirin, and caffeine so no binder is present.
The ratio is still You will be starting with the amount of analgesic that would normally be in 4 tablets of Excedrin, so please double all of the amounts in the book procedure.
Place the solid mixture in an Erlenmeyer flask. Add 20 mL CH2Cl2 to the mixture and a boiling stone and warm the solution to boiling on a hot plate.
Next you will do a gravity filtration with the wide-stemmed funnel with fluted filter paper, and collect the solid acetaminophen that did not dissolve in the CH2Cl2 remember there is no binder. Pour the warm solution through the filter paper in three portions, keeping the Erlenmeyer flask warm between portions.
This is your crude acetaminophen on the filter paper. Save a small amount of the crude acetaminophen.
The filtered dichloromethane contains the dissolved aspirin and caffeine. If there is solid material in the CH2Cl2, reheat the filtrate to redissolve the solids.
Allow the CH2Cl2 to evaporate until the volume of the solution to decreases to 15 mL or less. You will separate the aspirin and caffeine using a base extraction. Add the dichloromethane filtrate to the separatory funnel. Remove the aqueous layer and save it.
Add 4 mL of water to the separatory funnel.ME Student Writing Guide Lab Reports - 4 Lab Reports I. Before you Begin Summary A Lab Report is a detailed account of an experiment, its methods, results, and conclusions which answer a question.
B Define your Discovery Question Writing down one or two primary “big picture” quest ions your report addresses become the focal. Fig. A) The central bottleneck model, as applied to a traditional dual-task experiment. At short stimulus onset asynchronies (SOAs), like the one shown in the figure, the central stage of Task 2 (e.g.
response selection) must wait for the central stage of Task 1 to finish. Experiment 1 Lab Report - Download as Word Doc .doc), PDF File .pdf), Text File .txt) or read online.
Scribd is the world's largest social reading and publishing site. Search Search. Cell culture is critical to your success, so make sure everyone in your lab uses the best procedures and products to consistently get the outcomes you expect.
Cell Culture Basics is an introduction to cell culture, covering topics such as laboratory set-up, safety and aseptic technique. Here's a format for a lab report you can use if you aren't sure what to write or need an explanation of what to include in the different parts of the report. Lab Report A lab report is how you explain what you did in your experiment, what you learned, and what the results meant.
Organic Chemistry II Laboratory Stereospecific Reduction of Benzoin with Sodium Borohydride; Experiment 9 Determination of the Stereochemistry by NMR Spectroscopy1,2 Week 9 Background Reading Zubrick, J. W. The Organic Chem Lab Survival Manual, 5th edition, Wiley & Sons, Inc., New York, Vacuum Filtration.