Observation Paper #1 Environment Setting: During my observation at the preschool here at Harper‚ I looked around and realized a lot of similarities and differences it has; compared to other daycare and preschool centers. The age of children in the room I observed was ages 3-5 with one lead teacher‚ and depending on the ratio of how many kids showed up on that day‚ about three or four helping teachers. The program was set up to a very open‚ happy and overwhelming setting. Every furniture and object
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Appearance of solution. Dissolve 1.0 g in 9 ml of alcohol R. The solution is clear (2.2.1) and colourless (2.2.2‚ Method II). Related substances. Examine by liquid chromatography (2.2.29). Prepare the solutions immediately before use. Test solution. Dissolve 0.10 g of the substance to be examined in acetonitrile for chromatography R and dilute to 10.0 ml with the same solvent. C. N‚N′-diacetyl-L-cystine‚ Reference solution (a). Dissolve 50.0 mg of salicylic acid R in the mobile phase and dilute
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behind. However it is inefficient because a small amount of liquid is always left in the solid residue and very fine solid particles take some time to settle out and any disturbance of the liquid can mix them in with the liquid being poured off. Chromatography is used to separate mixtures of substances into
Free Mixture Separation process Chemical substance
CHM130 Lab 9 Chromatography Name: Karlee Rose A. Data Table (12 points) Paper # Color Source Solvent Distance Component Moves Distance Solvent Moves Rf value 1 Yellow M&M Candies 0.1% Salt Solution 28.88mm 42mm 0.69 2 Yellow Reese’s Pieces 0.1% Salt Solution 16.95mm 32mm 0.53 3 Purple Grape Soda 0.1% Salt Solution 32.15mm 51mm 0.63 4 Purple Grape Koolaid 0.1% Salt Solution 12.12mm 31mm 0.39 5 Red Easter Egg Dye 0.1% Salt Solution 1.18mm 7mm 0.17 6 Red Dry Erase Marker
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Research Paper Moby Dick Many people would look at Moby Dick as a monstrosity of a book filled with nothing but nonsense. When I first started this novel‚ I had the same mindset. I viewed the book from a material angle‚ whereas there is a much deeper meaning intended by Melville. As I continued reading‚ these themes and symbols began to pop out and finally make sense. The author progresses the plot and adds depth to the novel by using symbolism. These symbols are either objects or things to the
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The Chromatography of Food Dyes and determination Of the Dyes Present in M&M Candies Procedure To complete this lab‚ I first mixed the solvent solution consisting of the proper ratio of water‚ salt‚ and isopropyl alcohol in a Pyrex measuring cup. I then prepared my chromatography papers for 2 trials by drawing‚ with a pencil‚ the appropriate lines and labels. Using a toothpick‚ I added the color to the paper‚ and then repeated until the color was strong. I repeated this step several more
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separated by a procedure called chromatography. The procedure uses a special paper and solvent. The chlorophyll molecules adhere to the paper. The solvent molecules move up the paper by capillary action. Each chlorophyll molecule will travel up the paper at different rates. Hypothesis: If chlorophyll is removed from the plant‚ then the different pigments in the plant can be visible. Materials: -Spinach -Coin -Chromatography paper -Ruler
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After completing both my Investigative Field Essay‚ and Annotated Bibliopgaphy + Lit Review‚ I definitely felt more confident when it came to researching for reliable and credible sources for my rhetorical analysis paper but I was still confronted with obstacles. Although I now acquired this skill‚ this assignment shifted my work into analyzing information in a different medium. For example‚ for this assignment we had to pick two artifacts‚ and one of them had to be in the form of a video or image
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A popular technique in separating components of a mixture is paper chromatography. We use paper chromatography to separate mixtures and isolate there components to collect them individually. In this experiment‚ we will use acid- base indicators to help determine the unknown mixture. Acid- base indicators will change in color when the presence of pHs rise and fall when acids or bases are added to a solution. After setting strips of paper into a flask with the eluding solvent and waiting 45-60 minutes
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Persuasive Paper Toilet paper is a material item that most people use. This paper has a big impact on our society. Not many people pay attention to how they put their paper on they just sort of throw it all together in a matter of seconds. One day I noticed that my paper was harder to get than normal‚ then I noticed that the beginning of the paper was hanging from the back of the roll instead of laying on it or hanging over the front. This startled me‚ I did not realize until then that you can put
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