Chromatography: How can we separate a mixture? Purpose The chromatography lab is to understand how molecules with similar molecular properties can be separated with paper chromatography. These differences will be interpreted to see the distinction of separate chemical substances. Pre Lab Questions 1. Explain capillary action as it pertains to water and paper. Capillary action makes water draw up the paper. As paper absorbs water mixes with the solutions in the paper. 2. What is the
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Paper chromatography is an important separation technique that depends upon differences in how strongly the dyes are adsorbed onto the paper (stationary phase) and how soluble the dyes are in the developing solvent (mobile phase). In paper chromatography‚ a small amount of the mixture to be separated is placed close to the edge of a piece of paper. The edge of the paper is then immersed in a developing solution. As the developing solution ascends up the paper by capillary action‚ the. components
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Search the web. Some interesting sites are listed below. Note that some of these sites go into much more depth than is reasonable for this course. http://en.wikipedia.org/wiki/Chromatography http://ull.chemistry.uakron.edu/analytical/Chromatography/ http://orgchem.colorado.edu/hndbksupport/TLC/TLC.html this is for TLC – similar to paper http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/C/Chromatography_paper.html http://jchemed.chem.wisc.edu/JCESoft/Programs/CPL/Sample/modules/paprchrom/paprchromdesc
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OBJECTIVES: The objective of this experiment was to extract plant leaf pigments and determining them by using the Rf values obtained from the paper chromatography technique. The hypothesis of the experiment was that all of the five listed pigments would be present in the extracted plant leaf according to the Rf values. PROCEDURE/APPARATUS: The equipments used were a 18 x 150 mm test tube with stopper‚ graduated cylinders‚ Erlenmeyer flask‚ mortar and pestle‚ metric ruler‚ tall jar‚ acetone‚ tiny
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of this paper is to explain how a group can become a high-performance team. The purpose is also to examine the impact of demographic characteristics and cultural diversity on group behavior. This paper will illustrate how demographic characteristics and cultural diversity contribute to or detract from high-performance teams. High-Performance Teams A high-level of performance makes up the basis for groups and teams today. High-performance is a major focus for many organizations since group and
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Title:The Chromatography Process of Expo Markers Abstract:This experiment is to uncover whether or not the Expo Markers are homogeneous or heterogeneous mixtures. The experiment will conduct filter paper being slightly submerged in a container of water and inspected for pigmentation changes. In the experiment the pigments will rise up the filter paper once exposed to the water (solvent). After the experiment‚ it concludes that the mixture is a homogeneous mixture due to the chemical
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Leading People High Performance Working The Concept of High Performance working has various interpretations. One common explanation is that ‘high performance working has come to be associated with the achievement of High levels of performance‚ profitability and customer satisfaction by enhancing skills and engaging the enthusiasm of employees.” (ILO 2002) Many organisations are under pressure to become more efficient in reaching targets and deadlines and aiming to generate high added value.
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Elements of a High Performance Organization Paper Carlos J. Negron and Billy Drauhgon AJS/512 August 13‚ 2012 Prof. Kim Tandy Abstract Explain how a high performance organiztion will benefit from the use of technology we will desrcibe‚ analyze and examine the different elements that make up a high performance organization. The way this topic is being approached is through exploring how information technology is a key element in a high performance organization. By the use of Information
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Manufacturing a High Performance Team Keith James and Beverly Lea University of Phoenix LDR531 Darrel Bolman April 2‚ 2012 Manufacturing High Performance Teams In the current globalized economy‚ stating a new company may be challenging due to high rate of competition from organizations which have already stabilized. To ensure that the new company gains a stronghold in the market‚ it is important to establish a high performance team that will work more efficiently (Ashkanasy‚ 2010). For
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Groups are defined as two or more people who work regularly with one another to achieve common goals (Schermerhorn‚ Hunt‚ & Osborn‚ 2005‚ Chapter 9). For a group to become a high-performance team‚ the team needs to be able to use their collective skills and behaviors to become an efficient model working towards a common goal. Having a common goal will make each team member accountable for the success and failure of the team. Since each team member is accountable to the team‚ each member ’s behavior
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