Forming Methyl Orange an Azo Die Abstract: An synthetic azo dye was created by reaction of diazonium salt with N‚N-Dimethylanaline. The final product created was 4-dimethylaminoazobenzene-4-sulfonic acid‚ an orange clay-like substance. Sulfanilic acid was chemically manipulated by using sodium carbonate followed by cooled sodium nitrate and hydrochloric acid to form the diazonium salt used in the reaction. The products were washed in ethanol. The product was obtained at an 84% yield and was
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DOCUMENT CHECKLIST Certified copies of : o o o o o o Identity Card SPM/ UEC/ O-Level results STPM/UEC/A-Level/ Matriculation/ Diploma or equivalent Full Academic Transcripts (if applicable) Letter of Completion/ Certificate or Scroll Subjects synopsis for credit exemption (if applicable) What you need to BRING during Registration: (please ignore this if it has been submited or done earlier) Letter of Offer from IUKL 4 passport – sized colour photographs (blue background) Original
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Timeline of Gendered Movements [pic] Timeline of Gendered Movements Beginning in the mid-19th century‚ woman suffrage supporters worked to achieve what many Americans considered a radical change in the Constitution. Women’s rights pioneers used tactics such as parades‚ silent vigils‚ hunger strikes‚ and picketing to get there points across and Congress to pass a women suffrage amendment. (Reforming Their World‚ 2007) The 19th amendment of 1920 is a very important amendment to
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psychosexual stages of libido. Much like Freud‚ Erikson believes that personality develops through a series of stages. Erikson’s theory though believes that these stages go one throughout a person’s lifespan. There are eight stages of Erikson’s timeline or stages of psychosocial development; trust & mistrust‚ autonomy vs. shame and doubt‚ imitative vs. guilt‚ industry vs. inferiority‚ identity vs. confusion‚ intimacy vs. isolation‚ generativity vs. stagnation‚ and integrity vs. despair. These
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UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS General Certificate of Education Advanced Subsidiary Level and Advanced Level CHAPTERS CLASSIFIED:ENZYMES 9700/2 BIOLOGY Paper 2 Structured Question AS For year 2014 Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your candidate number and name on all the work you hand in. Write in dark blue or black pen. You may use a soft pencil for any diagrams‚ graphs or rough
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PATTERNS IN NATURE – Summary Notes 1. ORGANISMS ARE MADE OF CELLS THAT HAVE SIMILAR STRUCTURAL CHARACTERISTICS 1.1 Outline the historical development of the cell theory‚ in particular‚ the contributions of Robert Hooke and Robert Brown The Cell Theory states that: All living things are made of cells (Theodor Schwann & Matthias Schleiden) Cells are the basic structural and functional unit of organisms (Theodor Schwann) All cells come from pre-existing cells (Rudolf Virchow) The historical
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Developmental Timeline Piaget‚ the founder of the Cognitive Development Theory‚ concentrated on the cognitive appearance of individual development. He gave a specific picture of how thinking is refined with individuals‚ ending that the distinction among adults and children’s thinking is qualitative or not quantitative. Piaget insisted that development happens in significant‚ clear and visible stages. Furthermore‚ he made a presumption that influential growth is independent of judgment based on
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GCSE Biology B General Certificate of Secondary Education Unit B731/02: Modules B1‚ B2‚ B3 (Higher Tier) Mark Scheme for June 2012 Oxford Cambridge and RSA Examinations OCR (Oxford Cambridge and RSA) is a leading UK awarding body‚ providing a wide range of qualifications to meet the needs of candidates of all ages and abilities. OCR qualifications include AS/A Levels‚ Diplomas‚ GCSEs‚ OCR Nationals‚ Functional Skills‚ Key Skills‚ Entry Level qualifications‚ NVQs and vocational qualifications
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A Pearl Harbor Timeline The following is a timeline of selected events leading up to‚ and following‚ the Japanese attack on Pearl Harbor. 1937 July: Japan invades North China from Manchuria. 1940 July: U.S. imposes trade sanctions‚ followed by an embargo‚ aimed at curbing Japan’s military aggression in Asia. 1941 January: Adm. Yamamoto begins communicating with other Japanese officers about a possible attack on Pearl Harbor. Jan. 27: Joseph C. Grew‚ the U.S. ambassador to Japan‚ wires
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Big Idea 2 Biological systems utilize free energy and molecular building blocks to grow‚ to reproduce and to maintain dynamic homeostasis. Living systems require both free energy and matter to maintain order‚ grow and reproduce. Organisms employ various strategies to capture‚ use and store free energy and other vital resources. Energy deficiencies are not only detrimental to individual organisms; they also can cause disruptions at the population and ecosystem levels. Biological systems must both
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