2013-2014 Standard Level IB Business and Management Internal Assessment Will the acquisition of Tumblr by Yahoo significantly help this former “internet pioneer regain traction with younger internet users”? Word Count: 1438 Candidate Name: Phoebe‚ Leung Ching Lam Candidate Number: 003069-037 Class: F6.CassiaContents Page 1. Introduction The purpose of this essay is to investigate whether the acquisition of Tumblr by Yahoo will significantly help the former Internet pioneer regain
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SYLLABUS Cambridge O Level Chemistry 5070 For examination in June and November 2014 University of Cambridge International Examinations retains the copyright on all its publications. Registered Centres are permitted to copy material from this booklet for their own internal use. However‚ we cannot give permission to Centres to photocopy any material that is acknowledged to a third party even for internal use within a Centre. © University of Cambridge International Examinations 2011 Contents
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Chemistry of love: how science can explain our daily lives? By Barton Dong Loving and being loved adds richness to our lives. When people feel close to others they are happier and even healthier. Love helps us feel important‚ understood‚ and secure. When people think of love‚ a romantic emotional scene appears in their minds. In the heavy days of a mutual crush‚ pulses race‚ knees go weak‚ and heads reel. So strong are these feelings‚ they’ve launched a thousand songs and
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How to choose the best flat iron for every hair type When it comes to flat irons‚ you should know that there are various models available on the market such as ceramic‚ titanium or tourmaline flat irons. There are also other alternatives including the metal and glass irons‚ but they are not so popular. They provide low quality straighteners which can damage your hair. However‚ before buying a flat iron‚ it’s recommended to do some research and find a quality device which must be the right choice
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Economics IB past paper questions Structural questions 1. (a) “The price elasticity of demand and the price elasticity of supply for many primary commodities tend to be low.” Explain what is meant by this statement‚ and how this contributes to the problem of price instability for primary commodity producers. [10 marks] (b) Evaluate the view that it is best to allow primary commodity prices to be determined purely through the free interaction of market forces. [15 marks] 2. Explain what
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values that have trailing zeros only to the left of the decimal point are ambiguous and should be expressed in scientific notation. We must take note that the chemistry textbook (Silberberg 6e) states that placing a decimal point to the right of some trailing zeros (example: 300.) will make the zeros significant. However in General Chemistry‚ we do not follow this rule. If we want to write a whole number with trailing zeros we must use scientific notation to show which zeros are significant. When
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Chemistry 121 Colligative Properties Lab Demonstration of Selected Calculations from Choice I Determination of Kf for Naphthalene To determine the Kf for naphthalene‚ we need to find the difference in the freezing point of pure naphthalene and the solution of 1‚4-dichlorobenzene in naphthalene. Let’s say that we did this experiment‚ used 1.00 g 1‚4-dichlorobenzene in 10.00 g naphthalene‚ and found that the freezing temperature of pure naphthalene was 78.2°C‚ while that of the solution was 75
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Nick Kehlor Anne Schmalstig English 106 18 April 2014 Tony Stark and Iron Man‚ True Heroes Not many superheroes can say that they have no born given superpowers‚ saved the world‚ and make an audience die from laughter. Tony Stark can though in the movie‚ Iron Man. With Tony’s intellectual abilities‚ he was able to make a powerful metal suit that contained guns‚ armor‚ and rockets to make it fly. Leading up to this‚ Tony Stark was a man who was co-owner of one of the most powerful weapon companies
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Conversely‚ metal that is placed lower in the electrochemical series is the cathode and acts as an electron acceptor. Presence of different variables: Independent variables: Different pair of metals as electrodes Pairs of metals Magnesium and Silver metal Iron and Silver metal Zinc and Silver metal Lead and Silver metal Copper and Silver metal Electrolyte used Magnesium Nitrate and Silver
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Thermochemistry IB questions 1. Ammonium nitrate‚ NH4NO3‚ dissolves readily in water according to the equation: NH4NO3(s) NH4+(aq) + NO3-(aq) H = 28kJ mol-1 Which of the following contribute(s) to the occurrence of this process? I. The system moves to lower enthalpy. II. The system becomes more disordered. a. I only b. II only c. Both I and II d. Neither I nor II 2. Which substance has the largest lattice energy? a. NaF b. KCl c. MgO d. CaS 3. A certain reaction is spontaneous
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