Objective: The objective of the lab is to separate the caffeine samples we are using‚ using thin layer chromatography. The solvent we are using for the separation is 3:1 mixture of Chloroform and Acetone. Principle: Thin layer chromatography (TLC) is an important technique that is useful for separating organic compounds. TLC is often used to monitor the progress of organic reactions and to check the purity of products. Separations in Thin layer chromatography involve distributing a mixture of
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NAVOTAS NATIONAL HIGH SCHOOL INTERVENTION ACTIVITY WORKSHEET IN GRADE 8 SCIENCE WEEK 3 (June 17‚ 2014) Newton’s Law of Motion Name:________________________________________ Grade/section________________ Score:____________ I. NEWTON’S FIRST LAW OF MOTION 1. Newton’s first law of motion is also known as the LAW OF ______________________________________. 2. Newton’s first law says that a. an object that IS NOT MOVING‚ or is at ___________________________‚ will stay at ___________________
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COMPETITIVE ANALYSIS INTERNAL RIVALRY Dunkin Donuts faces a very competitive environment within the coffee and snack industry. A major threat is other large competitors‚ including Starbucks Corporation‚ Peet’s Coffee‚ and newer entrants like McDonald’s McCafe‚ with the most significant threat coming from Starbucks. While Dunkin Donuts‚ as of April 2011‚ owns 16.1% of the market‚ Starbucks has 32.6% of market sharexxiii. Although larger competitors and chains pose a bigger threat in
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------------------------------------------------- Historical conception[edit source | editbeta] File:Curriculum Concept.svg In The Curriculum‚[3] the first textbook published on the subject‚ in 1918‚ John Franklin Bobbitt said that curriculum‚ as an idea‚ has its roots in the Latin word forrace-course‚ explaining the curriculum as the course of deeds and experiences through which children become the adults they should be‚ for success in adult society. Furthermore‚ the curriculum encompasses the
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Aniyah Ringgold Block 7 October 10‚ 2014 Life is an experience that comes along with failure. Have you ever had the feeling like you haven’t done your best at something or the feeling that you’re disappointing the people you care about most? Well I’ve had that feeling multiple times especially in middle school. In middle school I’ve experience lots of failure; failure with friendships‚ relationships‚ and rejection. Failure to me is being unhappy with yourself and not doing what you believe in
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Question 1 Ans: the factors that driven the change in Macedonia are: 1. Balkans being a political and cultural crossroad throughout history. 2. A civil war in 1990’s due to unresolved ethnic and religious tensions. Question 2 Ans: The first reason for change in that country was to transform Macedonia into democratic state and integration into European society Secondly‚ establishment of industrial relations arm that would act as conflict management to solve various ethnic‚ and political
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Physics Lab Report 1. For the wavelength measurement of different colors in the Hydrogen spectrum done in the lab‚ tabulate your data recorded along with the wavelength calculations performed for all colors in the spectrum. (2 points) Line Color a_left (m) a_right (m) a_average (m) sinq nm Red 0.235 0.27 0.2525 0.182145 5.47E-09 Green-Blue 0.17 0.33 0.25 0.180505 5.42E-09 Indigo 0.16 0.35 0.255 0.18378 5.52E-09 Violet? 0 0 0 0 0 To find the wavelength for all of the colors in this lab we used two
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CHM151LL Laboratory Report Form Fall 2011 Title: Project 5: SPECTROPHOTOMETRIC ANALYSIS OF A PENNY Date Run: 04/03/2012 Date Submitted: 04/15/2012 Grade: _____________________ Objectives: The purpose of this experiment is to use spectrophotometry to determine the percentage of copper in a copper-clad penny‚ and to determine the thickness of copper layer on the copper-clad penny. Introduction: In the spectrophotometric analysis of a penny lab‚ we will be conducting three
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Enzyme Lab Report Introduction: Enzymes are proteins that enable chemical reactions. In the enzyme lab‚ the effects of concentration‚ temperature and pH on the functionality of the enzyme catalase. The enzyme lab was also about measuring reactions by capturing the oxygen that was generated by the reaction. Materials and Methods: Experiment 1‚ 2‚ & 3 Experiment 1 examined the effects of concentration on catalase activity. Experiment 2 examined the effects of concentration in temperature
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Formal Scientific Lab Report Osmosis Katy Hunter 10-26-2012 Abstract: The objectives of this lab was to be able to create models of cells with the dialysis tubing to show us how the plasma membrane is selectively permeable‚ to study the effects of osmosis on a model cell‚ and to foresee the effect of solute concentration on osmosis. In order to achieve these objectives‚ we had to fill the dialysis tubing with either water‚ or different amounts of sucrose. We then tied off the tubes and put
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