Chem 21 Fall 2009 Experiment 9 — Recrystallization _____________________________________________________________________________ Pre-lab preparation. (1) Read the supplemental material from Zubrick‚ The Organic Chem Lab Survival Manual. (2) Draw the structure of acetanilide and report relevant physical data. Be sure to cite the source of the data. You should be able to figure out what’s relevant by reading the procedure. (3) Find and report the boiling points of the solvents you will be using
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Design of Experiments (DOE) Tutorial Design of Experiments (DOE) techniques enables designers to determine simultaneously the individual and interactive effects of many factors that could affect the output results in any design. DOE also provides a full insight of interaction between design elements; therefore‚ it helps turn any standard design into a robust one. Simply put‚ DOE helps to pin point the sensitive parts and sensitive areas in designs that cause problems in Yield. Designers are then
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(a company is singular) its product portfolio. Finally‚ Another strategy that adds value for the customer is their theproactive approach towards consumer demand of the consumers. Specifically‚ in the year 2011‚ the consumers demanded high fructose corn syrup (HFCS) to be removed from their cereals. Kellogg Thus‚ actively responded to this demand and by the end of the year‚ all the recipes were adjusted to remove HFCS from its products. To sum up‚ the operating strategies of Kellogg ensure that the
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produces more appetizing. The manufacturers are able to advertise their products as sugar-free due to the use of added sugars or what is commonly known as Splenda or high fructose corn syrup. According to Readers Digest in their article “4 Most Harmful Ingredients in Packaged Foods”‚ they claim that high fructose corn syrup is used commonly throughout all processed foods because it is a cheaper
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WHAT IS HIGH FRUCTOSE CORN SYRUP? * High fructose corn syrup (HFCS) is a calorie-providing sweetener used to sweeten foods and beverages‚ particularly processed and store-bought foods. It is made by an enzymatic process from glucose syrup that is derived from corn. A relatively new food ingredient‚ it was first produced in Japan in the late 1960s‚ then entered the American food supply system in the early 1970s. HFCS is a desirable food ingredient for food manufacturers because it is equally
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unethical experiments on human subjects; regardless of what their condition is or if they have been diagnosed with a disease. Although‚ the use of humans for experiments to further develop cures for diseases‚ or to improve weaponry in war has always been a questionable practice. Hundreds of medical experiments have been performed by various doctors such as: The Tuskegee Syphilis Study by the U.S Public Health Service‚ the experiments conducted in Nazi Germany by Josef Mengele‚ the experiments performed
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PLANT GROWTH EXPERIMENT Numerous environmental variables influence plant growth. Three students each planted a seedling of the same genetic variety in the same type of container with equal amounts of soil from the same source. Their goal was to maximize their seedling’s growth by manipulating environmental conditions. Their data are shown below. Plant Seedling Mass (grams) Day 1 Day 30
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Evaluation Evaluation Experiment one: This experiment was quite accurate‚ as when it is compared to the manufactures line which is on the same graph‚ we can see that this line is at most only 0.4? different form the manufactures line. This is a percentage difference of approximately 8%‚ using the formula: Difference ? original X 100 This shows that the results were good‚ as 8% is a very small margin of error. The error bars on the graph show that the most inaccurate result was the 60cm result
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Nonverbal Experiments Everyone will do Experiment #1 – A Mute Point Choose 3 additional experiments – follow the directions and have fun! 1. A mute point – We will all do this on the same day! You can not talk for one entire day. Document your frustrations‚ your “oops” moments‚ reactions from others‚ and if any new revelations came about from not speaking. Make sure you wear your sign! 2. Disregarding the Norm Go to a crowded public space. Intentionally go against the grain in some
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self-regulation is emerged. So‚ where does it all begin? Childhood. Pre-school is a great place to start teaching self-regulation. An experiment that I believe to be a useful demonstration of educating children on their self-regulation is group games that promote leadership skills. Materials Needed for Experiment: • Pilot’s hats Procedure To begin this experiment the marshmallow test must be administered to the kids and the results must be recorded. We then separate the kids into two different
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