Discussion: The two dyes identified were disperse blue 3 and disperse red 9. Disperse red 9 separated first because it is less polar than disperse blue 3. This is due to the structure of disperse red 9 being more symmetrical than that of disperse blue 3 and having more nonpolar bonds. Disperse blue 3 is more polar because it has a hydroxide bond and has a larger dipole. The principle behind using column chromatography is that it separates compounds based on polarity. The alumina serves to allow
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significant difference in Daphnia’s response when exposed to red light compared to white light. Thus‚ the null hypothesis was rejected and the experimental hypothesis was accepted. These findings could be due to the negative phototactic response that occurs when they are exposed to visible light that are above 600 Mn (nanometers) that are also considered the color red. This shows that Daphnia have a greater phototactic reaction to red light than when exposed to white light. When compared to a similar
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EXPERIMENT 10 Volumetric Analysis I Standardization of NaOH Solution Outcomes After completing this experiment‚ the student should be able to: 1. 2. 3. 4. Demonstrate the concept of quantitative analysis. Make solution and standardize it. Explain the difference between primary and secondary standard solutions. Quantitatively determine the concentration of a base. Introduction Titration is a common method of quantitative analysis used to determine the concentration of an unknown substance in a solution
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cell membranes are discovered in this exercise. Background The following information is key for the interpretation of the results of this experiment 1. Neutral red is a vital stain. It stains cells without quickly killing them. Many biological stains kill living cells. 2. Neutral red goes through an obvious color change‚ from red at about pH 6.8 to yellow at pH 8.0. 3. A 1% solution of sodium bicarbonate has a pH of about 8.5. 4. Yeast cells have an internal pH that is slightly acidic (about
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“Be Fed And Be Sheathed” at Bangkok’s Cabbages and Condoms By Debra Feinberg You’ve made it to Bangkok‚ you’ve seen the sites‚ and now you’re dying to sit down for a meal. Despite all the great things you’ve been told about Bangkok’s street food‚ you’ve seen the flies swarming around the food stalls and you can’t stand to watch the barehanded handling of the food‚ especially after the vendor sneezed into his hands and continued serving with out pause! Though intrigued by the cuisine‚ the street
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philosophies in best-selling books‚ audio tapes‚ TV shows‚ and the Internet. Diet in a cabbage soup Cabbage Soup Diet is one of the diet programs that enjoy popularity. It is a low fat high fiber diet that will help you lose those few extra pounds. People who intend to enroll in other long-term diet programs also use the cabbage soup diet to help them get into shape or lose some of those fats before signing up. The cabbage soup and water are the central figures in the diet program. Based on this fat-burning
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AXI DDR3 Controller The AXI DDR3 Controller provides access to DDR3 memory. It accepts the Read / Write commands from AXI and converts it into DDR3 access. While doing this it combines AXI burst transactions into single DDR access where ever possible to achieve the best possible performance from DDR3 memory subsystem. DESCRIPTION KEY FEATURES o High memory throughput achieved via Parallel operation of all the banks and reordering of commands in the controller to ensure the maximum utilization
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The Red-Eared Slider Turtle (Trachemys scripta elegans) inhabit freshwater lakes‚ streams‚ swamps‚ ponds and rivers. Male sliders become sexually mature when they are between 2 and 5 years old and are about 4 inches long. Females take longer to mature‚ reaching maturity when they are 5 to 7 years old and 6 to 7.5 inches long. Mating and courtship usually occurs between March and June. Slider turtles spend most of their time basking on rocks‚ logs near the water. Sometimes the red-eared slider turtles
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Methyl Red and Voges-Proskauer Test The Methyl Red test shows which bacteria are creating stable acids through mixed acid fermentation of glucose. This helps to identify enteric bacteria by examining how they metabolise glucose. Every enteric bacteria first produces pyruvic acid from metabolism of glucose. A methyl red positive enteric bacteria‚ uses the mixed acid pathway when breaking down pyruvic acid to different acids‚ like lactic‚ acetic‚ and formic acids. The Voges-Proskauer test determines
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A red–black tree is similar in structure to a B-tree of order[note 1] 4‚ where each node can contain between 1 to 3 values and (accordingly) between 2 to 4 child pointers. In such B-tree‚ each node will contain only one value matching the value in a black node of the red–black tree‚ with an optional value before and/or after it in the same node‚ both matching an equivalent red node of the red–black tree. One way to see this equivalence is to "move up" the red nodes in a graphical representation
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