M11/5/MATME/SP1/ENG/TZ1/XX 22117303 mathematics STANDARD level Paper 1 Candidate session number 0 0 Wednesday 4 May 2011 (afternoon) Examination code 2 1 hour 30 minutes 2 1 1 – 7 3 0 3 instructions to candidates Write your session number in the boxes above. not open this examination paper until instructed to do so. Do You are not permitted access to any calculator for this paper. Section A: answer all questions in the boxes
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Determining the equilibrium constant from pH values of changing concentrations of ethanoic acid Design Research question: How will altering the concentrations of ethanoic acid affect the pH value‚ and‚ in-turn‚ the equilibrium constant? Background information: When weak acids react‚ the reaction typically does not go to completion. Rather‚ the system goes to an intermediate state in which the rates of the forward and reverse reactions are equal. Such a system is said to be in chemical equilibrium
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MATME/PF/M12/N12/M13/N13 CONTENTS Type I tasks Lacsap’s Fractions Circles Type II tasks Fish Production Gold Medal Heights INTRODUCTION What is the purpose of this document? This document contains new tasks for the portfolio in mathematics SL. These tasks have been produced by the IB‚ for teachers to use in the examination sessions in 2012 and 2013. It should be noted that most tasks previously produced and published by the IB will no longer be valid for assessment after the November 2010
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HL History Internal Assessment Was President Ronald Reagan the reason for the Cold War’s conclusion? Word Count: 1‚634 Was President Ronald Reagan the reason for the Cold War’s conclusion? A. Plan of Investigation This investigation focuses on the impact that President Ronald Reagan had on ending the Cold War between the United States of America and the Soviet Union during the 1980’s. The use of historian argumentation‚ primary sources‚ such as Ronald Reagan’s Address to the Nation on Defense
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1) Started with 24 two 11 double with loam.. Are giving around 1 lace 90 thousand meters per month production capacity...with job work activities. Q) Tell me about your historical background 2) Current market situation is badly distorted because of lack of purchasing capacity of the consumers. Q)what is the current market situation of your company? 3) Its too tough competition in synthetic market Q)is is working in competition? 4) Strength:- having around 9 laces per month production so that
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AIM To find the acceleration of an object when falling down from a height in the presence of earth’s gravitational field‚ which is also known as free fall. Air resistance is neglected in this experiment. THEORY As an object is released from a height from the ground under the influence of the Earth’s gravitational force‚ the object will always fall under a constant rate of acceleration. Unlike in space‚ where object will just float around after being released‚ object falling on Earth will always
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Aim To Find the Number of Moles of Water of Crystallisation in Copper (II) Sulphate salt. Introduction Water of crystallisation is the term given to the molecules of water that are used to build up a crystal lattice in some ionic compounds.In copper II sulphate the blue crystals would be impossible without using water molecules to act as ’scaffolding’ within the structure CuSO4.5H2O. When this is heated the water molecules are driven off and the blue crystals become a white powder. As most
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Background Research Yeast are eukaryotic microorganisms just like other organisms‚ they must respire in order to survive. Respiration can be defined as the controlled release of energy from organic compounds to form adenosine triphosphate (ATP). The type of respiration that occurs is called aerobic respiration. It occurs when glucose and oxygen are present. It can be summarized by the equation: . Enzymes play a very significant part in respiration. During the different stages of respiration‚ enzymes
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Original Article EDITORIAL Airlines‚ Emissions and Europe’s Sensible Plan Published: February 26‚ 2012 The carbon dioxide from airplanes accounts for about 3 percent of the world’s greenhouse gas emissions‚ a share projected to go up as air traffic rises. The European Union is now requiring airlines that fly into or out of Europe to pay a fee for these emissions. This is a smart response to an urgent problem. The United States and the other nations opposing the program should either come
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Hoang‚ Sophia Candidate # 001430096 Artist Statement I create art because this passion and curiosity has been with me ever since I was a toddler‚ running around and doodling on any surface possible. In this course I wanted to learn techniques that would help me improve my style. I wanted to broaden my creativity by creating abstract works and designing dresses that mimic Alexander McQueen’s. And also to learn new mediums to create mixed media art because I find those artworks to be unusual
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