In the lab‚ the purpose was to standardize a KMnO4 solution than using it to evaluate how close a H2O2’s concentration was to its labeled concentration. In this lab‚ it was decided to compare the concentration of new Publix brand hydrogen peroxide to an old sample of the same solution. From the data collected in the first part by titrating a solution of FeSO4*7H2O with the KMnO4 solution‚ it was determined that the concentration was .028M MnO4-. This was able to be done because a known amount of
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Introduction Methyl Salicylate has been used for a long time for its pleasant odour and flavour. The objective of this experiment was to carry an organic synthesis; the preparation of salicylic acid from methyl salicylate. To do an organic synthesis‚ it is needed to chemically modify the molecules of another compound to end up with the desire compound. Methyl salicylate is the major constituent of wintergreen oil‚ which is why it was used in this experiment as the starting material. The new technique
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AP® WORLD HISTORY 2007 SCORING GUIDELINES Question 2—Continuity/Change Over Time BASIC CORE (competence) 0–7 Points 1. Has acceptable thesis. 1 Point • The thesis correctly specifies both change and continuity in the formation of national identity in the region of the Middle East‚ Southeast Asia‚ OR Sub-Saharan Africa from 1914 to the present. • The thesis must be explicitly stated in the introduction or the conclusion of the essay. • The thesis may appear as one sentence or as multiple
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An astronomer has a goal to discover and understand the nature of objects in our universe. Astronomers analyze and interpret the information obtained in order to make accurate models of these objects using instruments that collect‚ record‚ disperse and magnify the light that celestial objects give off. In this laboratory I learned how to measure the altitudes of stars using a quadrant. A quadrant is a quarter of a circle that has been divided into 90 degrees. I also learned how to find the angular
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10/7/12 AP: Advanced Placement or Absolute Pain? “Are you ready for a unique learning experience that will help you succeed in college? Through AP’s college-level course and exams‚ you can earn college credit and advanced placement‚ stand out in the admission process‚ and learn from some of the most skilled‚ dedicated‚ and inspiring teachers in the world.” This excerpt comes from the main web page about AP course on College Board’s official website. In 1900
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Help Room 1-3 Mon GMCS 212 2-4 Thu Final Exam Sat 6-8 pm Room assignments to be determined Alternate times‚ email chem200@sciences.sdsu.edu FINAL EXAM * problems 1-10 exam 1 material * probelsm 11-20 exam 2 material * problems 21-30 exam 3 material * problems 31-35 new material (MO theory from ch 11‚ ch 12) All Single-choice 10 multiple choice material 2. Which pair of atoms/ions has same # of electrons? 32p and 32s 15e 16e- Al 3+ and Cl- 10e- 18e- Xe and I-
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English III AP - AP( English Language and Composition Course Overview The English III AP (or AP( English Language and Composition) course objectives are to help students become “skilled readers of prose written in a variety of periods‚ disciplines‚ and rhetorical contexts” and to help students become “skilled writers who compose for a variety of purposes” (The College Board‚ AP( English Course Description‚ May 2007‚ May 2008‚ p. 6). Students are expected to read critically‚ think analytically
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Meghann Kiphart AP Biology Lab Report Number One Mrs. Irvine Introduction: Because all molecules have kinetic energy and are constantly in motion cells go through a process called diffusion. Diffusion is the movement if molecules from an area of higher concentration to and area of lower concentration. This process with continue to occur until an equilibrium is reached. Osmosis is a different and unique kind of diffusion. Osmosis is the diffusion of
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香港中學文憑考試 HONG KONG DIPLOMA OF SECONDARY EDUCATION EXAMINATION 練習卷 PRACTICE PAPER 化學 試卷一 CHEMISTRY PAPER 1 評卷參考 MARKING SCHEME (2012年2月22日修訂稿) (updated as at 22 Feb 2012) Hong Kong Examinations and Assessment Authority All Rights Reserved 2012 PP-DSE-CHEM 1–1 權版留保 局核評及試考港香 © 。旨之巧技用運與力能解理重着試考違有亦 ，難解及對應懂學，習學善改生學助無既，度態習學種這。吞生剝 活，記死背硬，案答準標為視考參卷評將應不生學。用之考參生學 和師教供，寫編而卷習練科本為專局核評及試考港香乃考參卷評本 This marking scheme has been prepared by the Hong Kong Examinations and Assessment Authority for teachers’ and students’
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Spontaneous fission is a type of radioactive decay in heavy elements with unstable nuclei being split into more stable smaller fragments 3) Two important application of neutron radiation are neutron therapy for tumors/cancer and neutron bombs for defense. 4) Ionization radiation is radiation with rays with enough energy to allowing ionization in the medium it goes through. 5) Fission typically releases two hundred million eV from each reaction. Fission occurs with stable nuclei 6) Uranium enrichment
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