Additional Questions: 1. H H H C C H H C C H C H H C H H Compound A Compound A is an intermediate compound found in a production plant attempting to synthesise n-hexane. a) List three physical properties of alkynes. b) Give the IUPAC name of compound A. [3 marks] [2 marks] c) There are several ways to form the final product from Compound A. An operator has decided to use Pt catalyst to react with Compound A. Write the complete chemical reaction equation. [3 marks] d) The quality assurance
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Edexcel IGCSE Maths 1 Answers to activities and exercises Unit 1 1NUMBER 11 EXERCISE 1 1 6 2 3 1 3 2 7 2 3 3 ‚ 75% 4 11 0.15‚ 15% 16 3 21 1 4 11 6 12 0.075‚ 7.5% 17 3 22 2 5 41 7 14 19 EXERCISE 1* 1 6 11 16 2 7 3 8 2 3 3 40 2 7 12 2 3 3 40 4 5 3 8 13 3 18 1 15 4 9 4 9 14 7 11 5 6 3 8 5 10 15 1 2 5 6 7 40 17 680 22 3.1 27 41.86 18 910 23 24 28 49.88 19 0.765 24 18 20 0.095 25 26.25 21 39 26 42.84 EXERCISE 2 1 6 11 16 5 –20 –6
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Compounding in English and Vietnamese: A Contrastive Analysis Nguyen Ngoc Thao HCMC University of Education Introduction According to Wikipedia‚ a compound is a lexeme (less precisely‚ a word) that consists of more than one stem. Compounding is the word formation that creates compound lexemes (the other word-formation process being derivation). It refers to the faculty and device of language to form new words by combining or putting together old words. In other words
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were used to determine the melting point. 6. The bicarbonate extract was acidified with concentrated HCl. A piece of litmus paper showed that it was acidic. 7. The benzoic acid was extracted by shaking it with25ml portions of dichloromethane. The organic extracts were collected in a pre-weighed Erlenmeyer flask and evaporated on the steam bath. The mass of Benzoic acid produced was determined. RESULTS (i) Naphthalene: 0.85g; Benzoic acid: 0.71g (ii) The melting point of Naphthalene: 80-89º
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ANSWER KEY FOR TEST 2 DECEMBER 2011 ECON 0110: MACROECONOMICS DR. KENKEL 25 questions worth 10 points each. Total Points = 250 1. Assume the following data apply to a certain country using 1996 as the base year: Year Consumer Nominal Price GDP Index (Trillions) 2005 144.9 12.2 2006 155.6 14.8 2007 169.5 17.5 The growth rate of real GDP between 2005 and 2006 is a. Less than 5.0% b. 5.0% to less than 6.0% c. 6.0% to less than 7.0% d. 7.0% to less than
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Straight Chain Alkanes The general formula for an alkane is CnH2n+2 wheren is the number of carbon atoms in the molecule. There are two ways of writing a condensed structural formula. For example‚ butane may be written as CH3CH2CH2CH3 or CH3(CH2)2CH3. Rules for Naming Alkanes * The parent name of the molecule is determined by the number of carbons in the longest chain. * In the case where two chains have the same number of carbons‚ the parent is the chain with the most substituents.
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Understanding Academic Integrity Answer Key Speakers: Narrator‚ Student This answer key reviews correct and incorrect feedback for the Understanding Academic Integrity Tutorial scenario questions. Scenario 1 Student: I’m taking this course a second time‚ so I’m just going to reuse my paper from the last time I took it. I wrote the paper‚ so it doesn’t make sense for me to write the same paper all over again. What should I do? (Option 1) I should probably ask my instructor if I can reuse my paper
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c IB DIPLOMA PROGRAMME PROGRAMME DU DIPLÔME DU BI PROGRAMA DEL DIPLOMA DEL BI SPEC/4/BIOLO/HPM/ENG/TZ0/XX/M MARKSCHEME SPECIMEN PAPER BIOLOGY Higher Level Paper 1 2 pages –2– SPEC/4/BIOLO/HPM/ENG/TZ0/XX/M 1. B 16. C 31. D 46. – 2. C 17. B 32. D 47. – 3. D 18. B 33. A 48. – 4. D 19. B 34. D 49. – 5. D 20. B 35. C 50. – 6. D 21. B 36. D 51. – 7. B 22. B 37. B 52. – 8. B 23. D 38. D 53. – 9. A 24. C 39. A 54. – 10. D
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BIOE 301/362 Name: Exam 2 March 13‚ 2008 The exam consists of 10 questions. Show all work to receive credit. Clearly organize your work and draw a box around your final answers. NEATNESS COUNTS! Good Luck! Problem 1 (5): Problem 2 (18): Problem 3 (12): Problem 4 (15): Problem 5 (8): Problem 6 (12): Problem 7 (12): Problem 8 (18): Extra Credit (4): Total (100): PROBLEM 1: Development of technology
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COrdination compounds Question 9.1: Explain the bonding in coordination compounds in terms of Werner’s postulates. =Werner’s postulates explain the bonding in coordination compounds as follows: (i) A metal exhibits two types of valencies namely‚ primary and secondary valencies. Primary valencies are satisfied by negative ions while secondary valencies are satisfied by both negative and neutral ions. (In modern terminology‚ the primary valency corresponds to the oxidation number of the metal
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