Post Lab #4- Column Chromatography Organic Chem 3418-2 March 3‚ 2011 Theoretical Background- The fluorene and fluorenone mixture was separated by first dissolving the mixture in heptane. Since “like dissolves like”‚ fluorene dissolves with the non-polar heptane and the polar fluorenone dissolves in the polar ethyl acetate solvent. This phenomenon was illustrated in class before the experiment‚ when it was pointed out why water will not dissolve fluorene‚ fluorenone‚ or transstilbene
Premium Oxygen Chemistry Distillation
THE EXTRACTION OF DNA THE EXTRACTION OF DNA 07/02/2013 | By Laura Green‚ Tasnim Rahman and Sandra Strammiello | Table of Contents DNA………………………………………………………………………………………..………… 2 The Discovery of DNA…………………………………………………………………………...…………..…………. 4 The Steps for Extracting DNA…………………………………………………………………………………………….…..… 5 Experiment: Which Product Can the Most Visible Amount of DNA Be Extracted From?..............................................................................................
Free DNA
Experiment No. 1 ON – OFF CONTROL INTERPRETATION OF RESULTS In today’s modern world‚ automation is one of the things that bring about ease and comfort in our lifestyle – from the temperature of our room to the flushing of the toilet. Automation of these things is run by control systems. A control system is a device or set of devices to manage‚ command‚ direct or regulate the behavior of other devices or systems. Many industrial control systems have approximately first order dynamics and
Premium Control theory Control system Feedback
Introduction Extraction is a purification technique used in organic chemistry to separate compounds from a mixture of two or more compounds. There are three different extraction techniques: liquid-liquid extraction‚ solid-liquid extraction and chemically active extraction. All three types of extraction follow the same principle. Organic molecules dissolve in organic solvents and polar molecules dissolve in aqueous solvents. This phenomenon is observed because of the intermolecular forces between
Premium Solubility Solvent Chemistry
And The Band Played On By Randy Shilts And the band played on is a true story published in 1987 that illustrates the AIDS epidemic. The AIDS outbreak started in this book around the 1970’s and is still around in today’s society. Randy Shilts wrote this book in order to show the many errors that occurred and killed while trying to find what this virus was and how it was spread. Many people during this time were affected by this virus especially in New York and San-Francisco‚ which is where most
Premium AIDS HIV Blood
rubber bands into a cool bracelet. The founder‚ Cheong Choon Ng‚ created this in 2011. The supplies needed in order to create this bracelet are rubber bands‚ a loom kit‚ and a Rainbow Loom hook. When all the supplies are prepared‚ it is time to start. First‚ make sure that the red arrow is facing outward. Also‚ make sure that 25 rubber bands are supplied‚ with at least two different colors. Take a rubber band and wrap it around the first middle peg. Stretch the other end diagonally to the first right
Premium The Band Color Rubber band
DNA Extraction Lab Problem Statement: Do you think you have ever eaten DNA? Background Information: DNA is too small to see under a regular microscope‚ so how can it be studied? DNA is a large molecule found in all living things; therefore it is possible to extract it from cells or tissues. All we need to do is disrupt the cell’s plasma membrane and nuclear envelope‚ make the DNA clump together and - voila! - DNA extraction is possible. DNA extractions from onion‚ bananas‚ liver‚ or wheat
Premium DNA
Resistance Bands Nichols‚ Nicole. "No Need to Stretch the Truth about Resistance Bands." 29 September 2004. SparkPeople Fitness Articles. 24 March 2007. . Resistance bands‚ also known as Therabands‚ exercise bands‚ stretch bands‚ or workout bands‚ have been around for a while. They started out as rehab tools but have become popular in the fitness world. Resistance bands are color coded into many levels of resistance. They provide variety to everyone’s workouts from beginners to conditioned
Free Stretching Physical exercise Exercise
CIVIL ENGINEERING ABSTRACT This report describes a compression test on concrete columns. The main aim of the tests was to illustrate the ultimate strength limit state of reinforced concrete columns in combined bending and compression and to demonstrate the influence of slenderness on the ultimate load capacity. Test methods are described. It was found that the concrete columns exhibited complicated behaviour‚ and had a squash load point of 342.7KN and moment at 0 KN.m‚ a decompression
Premium Beam Experiment Buckling
becomes congested during sexual arousal; therefore‚ male erection equals erection of the female erectile organs. The correct anatomical term to describe the erectile tissues responsible for female orgasm is the female penis. Vaginal orgasm and the G-spot do not exist. These claims are found in numerous articles that have been written by Addiego F‚ Whipple B‚ Jannini E‚ Buisson O‚ O’Connell H‚ Brody S‚ Ostrzenski A‚ and others‚ have no scientific basis. Orgasm is an intense sensation of pleasure achieved
Premium Penis Orgasm Sexual arousal