Green Chemistry Many companies all over the world produce chemicals for their products that are harmful to the environment‚ human health‚ and to all living species. Green Chemistry is the use of chemistry for the prevention of chemical pollution to the environment by using chemicals that are benign‚ or not harmful. The Environmental Protection Agency (EPA) states that the mission of Green Chemistry is‚ "To promote innovative chemical technologies that reduce or eliminate the use or generation
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information. From all of us here at the Edexcel International team‚ we wish you every success.’ Patrick Casey Director of International‚ Edexcel Vocational-JUNE2012-FINAL-gk.ind2 2 14/6/12 03:16:23 Contents APPlIED SCIENCE ArT AND DESIgN BuSINESS AND SErvICES CONSTruCTION AND ThE BuIlT ENvIrONmENT ENgINEErINg hAIrDrESSINg & BEAuTy ThErAPy hEAlTh AND SOCIAl CArE hOSPITAlITy IT lAND-BASED AND ENvIrONmENT mEDIA PErFOrmINg ArTS & muSIC PuBlIC AND uNIFOrmED SErvICES SPOrT
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12U Equilibrium Unit Test Multiple Choice K/U Identify the letter of the choice that best completes the statement or answers the question. ____ 1. When solid lead(II) phosphate is in equilibrium with its ions‚ the ratio of lead(II) ions to phosphate ions is which of the following? a. 1:1 d. 2:3 b. 1:2 e. 3:2 c. 2:1 ____ 2. In a saturated solution of silver phosphate‚ the concentration of silver ion is 4.5 10-4 mol/L. The Ksp of silver phosphate would be which of the following
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Explain the effects of the Purges? Introduction The Great Purge was a campaign of political repression in the Soviet Union orchestrated by Joseph Stalin from 1934 to 1939. It involved a large-scale purge of the Communist Party and government officials‚ repression of peasants and the Red Army leadership‚ and widespread police surveillance‚ suspicion of "saboteurs"‚ imprisonment‚ and arbitrary executions. 1st Para Scientists‚ Doctors and Engineers‚ were heavily targeted‚ imprisoned and killed.
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Objectives The main objective of this experiment is to differentiate between a physical change and a chemical change. A physical change includes a change in the material without affecting its composition‚ such as the physical state change. However‚ a chemical change includes the change in the composition of the substance. The change in color‚ formation of a gas or a solid product‚ and the production of energy are the evidences of a chemical reaction‚ thus‚ of a chemical change. Materials
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Should emgs go public in Norway or the US? The manager tried to decide whether emg list on Oslo Bors or U.S exchange. The detailed analysis follows up: • Initial preparation efforts and cost The Oslo Bors listing may be much easier and cheaper choice than the U.S exchange one. The financial policies and principles are not big problem since emg had already change its accounting from the Norwegian krona to U.S dollars. However‚ the U.S listing will cost more upfront legal fees‚ recruitment fees
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What were the most significant causes and effects of the Sepoy Mutiny 1857? A. Plan of investigation B. Summary of evidence C. Evaluation of sources D. Analysis E. Conclusion F. Bibliography What were the significance causes and effects of the Sepoy Mutiny of 1857? The investigation assesses the significance of the causes of Sepoy Mutiny of 1857. In order to evaluate the causes‚ the investigation evaluates different ways Indians reacted towards the English
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TOK essay – November 2012 * “There are no absolute distinctions between what is true and what is false.” “Everything we hear is an opinion‚ not a fact. Everything we see is a perspective‚ not the truth.” Marcus Aurelius The quotation above explains the claim that is discussed in this essay; weather truth and falsehood can be distinguished. If a person claims they are aware of the truth‚ it is impossible for it to be absolute. Absolute truth would be information‚ which has not been manipulated
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English Language & Comprehension: Answers in Last Page Directions—(Q. 1–5) Some of the sentences have errors and some have none. Find out which part of a sentence has an error and blacken the rectangle [■] corresponding to the appropriate letter (A‚ B‚ C). If there is no error‚ blacken the rectangle [■] corresponding to (D) in the Answer sheet. 1. Though there is hourly bus service on this route (A) a number of people are still suffering (B) as there is no bus shelter here. (C) No error.
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Reactions of some Hydrocarbons Equipment Required: -4 Test tubes -Dropper - Cyclohexane (C6H12) (3ml) - Cyclohexene (C6H10) (3ml) - Toluene (CH3C6H5) (3ml) - Potassium Permanganate solution (KMnO4) .01 mol L-1 (4ml) - Sulfuric Acid (H2SO4) 2mol L-1 (2ml) - Bromine Water (Br2) (5ml) Procedure: Reaction of hydrocarbons with acidified permanganate: 1) Into three separate‚ labeled test tubes place 1 ml of cyclohexane‚ cyclohexene and toluene respectively. 2) In a separate test
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