PAPER AND THIN-LAYER CHROMATOGRAPHY Lab 47 Michael Stravino‚ CHM 2211L‚ June 3‚ 2012 Abstract Thin-Layer Chromatography and Paper Chromatography can be used to identify identical compounds‚ unknown compounds‚ the number of components in a mixture‚ as well as other important uses not explored in this laboratory. This experiment explores these techniques to identify an unknown amino acid by TLC and analyze food colors using paper chromatography. By using 2.0 mL of dimethoxyethane and 18 mL of
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Measurements Lab Name Length Measurements – Follow the Instructions in the Lab Manual and fill in your data in the tables provided. Data Table 1 – Length measurements |Object |Length (cm) |Length (mm) |Length (m) | |CD or DVD |12.00 |120.0 |.1200 | |Key
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(2012‚ February 6). Kaspersky Lab CEO backs out of IPO plan. Retrieved from‚ www.Techworld.com. Holt‚ Kris. (2012‚ May 15). Apple Makes Strong Showing in American Customer Satisfaction Index Debut. Retrieved from‚ www.tmcnet.com/topics/articles/2012/05/15/290472-apple-makes-strong-showing-american-customer-satisfaction-index.htm#ixzz1waQbDofn www. Jahangiri‚ Bonnie. (2008). The History of Ahmad Tea. Retrieved from‚ www.ehow.com. Kaspersky.com. (2012‚ March 23). Kaspersky Lab shows 864% growth in 5 year
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.(n.d). How Soil Influences Water. http://www.soil.ncsu.edu/publications/Soilfacts/AG-439-01/ http://www.eng.utoledo.edu/civil/heydinger/soil%20mechanics/SMgeol.pdf http://courses.ma.org/sciences/anat_phys/Intro%20Info/Lab%20Format.htm http://courses.nres.uiuc.edu/nres201/Labs/Lab%206%20Soil%20Texture%20and%20Density.pdf
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Introduction: During this unknown lab report various test were performed to differentiate microbes from each other and to compare metabolic and biochemical process. The gram stain distinguishes between Gram positive and Gram negative bacteria based on the composition of the cell wall. The Gram stain procedure distinguishes between Gram positive and Gram negative groups by coloring these cells red or violet. Gram positive bacteria stain violet due to the presence of a thick layer of peptidoglycan
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Feb. 19‚ 2015 Liangting Lin 1-4 Lab Partner: Sunny Zhao 20C: Acid-Base Titration Purpose/Objective: 1. To titrate a hydrochloric acid solution of unknown concentration with 0.50M sodium hydroxide‚ and determine the molarity of the hydrochloric acid 2. To titrate an acetic acid solution with 0.50M sodium hydroxide‚ and determine the molarity and percentage composition of the vinegar. Apparatus
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antibiotic and disinfectant sensitivity tests to identify an unknown bacterium. Materials and Methods Microscopic and Macroscopic Observations All samples and observations of the unknown bacterium were taken after 48 hours of incubation at 35° Celsius. Microscopic observations were performed on four different microscope slides. Three of these observations were gram stains and the last observation was of an endospore staining. The unknown bacteria samples for the endospore stain were taken off of
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Daphny Maldonado Bio Lab 2107 Kiah Britton W 10-12:30 Is H20 Bad for You? Abstract: In the village of Gopher Hollow there’s a cluster of Blue Baby Syndrome. There were four infants affected by this cluster. The families from the infants would collect their water from wells. We have to determine what’s the source of the high levels of nitrites in the water. The four sources that could be the point of contamination are a new subdivision‚ textile plant‚ an organic farm‚ and a mountain lake
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Acid/Base Titrations Pre- Lab Questions 1. Using your textbook or a handbook‚ look up the formula and structure of potassium hydrogen phthalate (KHP) used to standardize the solution of NaOH in this experiment. Calculate the Molar Mass of KHP. Molar Mass= 204.22 g/mol Formula: KC8H5O4 2. Using your textbook or chemical dictionary‚ write the definition of indicator. Indicator- a substance added at the beginning of the titration that changes color at (or very near) the equivalence
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of biological system is usually preferred as the pH system‚ which determines the pH level of dilute aqueous solutions. In this laboratory‚ the data collected from the experiment will be used to graph the titration curves which help to identify an unknown amino acid. IntroductionAmino acids are simple monomers which are strung together to form proteins. Amino acids play a key cellular role in structure and function. Proteins themselves participate in nearly every physiological event in the cell. Since
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