6.1.1 If the reaction produces heat (increases the temperature of the surroundings) then it’s exothermic. If it decreases the temp (i.e. absorbs heat) then it’s endothermic. Also‚ the yield of an equilibrium reaction which is exothermic will be increased if it occurs at low temps‚ and so for endothermic reactions at high temperatures. 6.1.2 Exothermic : A reaction which produces heat. Endothermic : A reaction which absorbs heat. Enthalpy of reaction : The change in internal energy (H) through
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GRE GRE Now duate ded gra by inten d optioniel major f aM w th the ow wiith score dattS N c ® Guide to the Use of Scores This publication includes: • Guidelines for the use of GRE® scores • Concordance information and percentile ranks oreSele Sc • Score interpretation and statistical information 2012–2013 www.ets.org/gre 19398 CONTENTS The GRE® Board and Its Committees ......................................................................................... 3 Overview of
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How does light intensity affect the rate of photosynthesis? Does the amount of light intensity increase the rate of photosynthesis in a pondweed? Design aspect 1 Introduction My investigation will be centered on measuring the rate of photosynthesis and whether or not light intensity will affect it. The formula of photosynthesis is Carbon dioxide + water oxygen + glucose with the arrow referring to light energy as a means to convert the CO2 and H2O into oxygen and glucose. Logically‚ one would
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Pre-ballot Draft of “Proposed Amendments to IAS 37 Provisions‚ Contingent Liabilities and Contingent Assets and IAS 19 Employee Benefits” Staff contact: Henry Rees‚ +44 20 7246 6466‚ hrees@iasb.org.uk page 1 Exposure Draft of Proposed AMENDMENTS TO IAS 37 PROVISIONS‚ CONTINGENT LIABILITIES AND CONTINGENT ASSETS IAS 19 EMPLOYEE BENEFITS Comment to be received by X MONTH 2004 page 2 Contents Introduction Proposed Amendments to IAS 37 Provisions‚ Contingent Liabilities and
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efficient. The externality is present if an economic activity (production or consumption) imposes costs on‚ or creates benefits for‚ third parties. If they impose costs on third parties they are considered negative externalities. Negative externality is a type of market failure. The government in London decided to impose tax on hauliers who use trucks that heavily polluted the environment. This is a negative externality since pollutions would hurt citizens in London. [pic] [pic] Figure
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level PaPer 1 Tuesday 2 November 2010 (afternoon) 1 hour INSTRUCTIONS TO CANDIDATES • Do not open this examination paper until instructed to do so. • Answer all the questions. • For each question‚ choose the answer you consider to be the best and indicate your choice on the answer sheet provided. 8810-6001 17 pages © International Baccalaureate Organization 2010 – 2 – 1. N10/4/BIOLO/HPM/ENG/TZ0/XX [Question and image removed for copyright reasons] 2. What is the sequence
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AP/IB Biology Lab Assessment The effect of various fruit and vegetable cell membranes on their water potential Independent variable: Type of fruit or vegetable. (Produce used: Russet potatoes‚ Pascal celery‚ Gala apple‚ Navel orange‚ and Imperator carrot). The fruit or vegetable will be placed in six 56.7 gram cups‚ ranging with sucrose molarities of 0 (distilled water)‚ 0.2‚ 0.4‚ 0.6‚ 0.8‚ 1.0‚ with 5 trials‚ leading to 30 cups for each produce variable. Dependent variable: The water potential
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M10/5/MATHL/HP2/ENG/TZ1/XX/M+ MARKSCHEME May 2010 MATHEMATICS Higher Level Paper 2 Samples to team leaders Everything (marks‚ scripts etc) to IB Cardiff 13 pages June 8 2010 June 15 2010 –2– M10/5/MATHL/HP2/ENG/TZ1/XX/M+ This markscheme is confidential and for the exclusive use of examiners in this examination session. It is the property of the International Baccalaureate and must not be reproduced or distributed to any other person without the authorization of IB Cardiff. –3– M10/5/MATHL/HP2/ENG/TZ1/XX/M+
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Combustion of a Wood Chip IB Chemistry 12 September 18‚ 2014 Ryan Ingham Table 1: Raw data collected from the temperature probe and scale for the water‚ the aluminum can and the wood chip. (Quantitative) Quantity Initial Temperature (±0.1K) Final Temperature (±0.1K) Aluminum Can 46.29g (±0.01g) 296.5 314.7 Water 250g (±0.1g) 296.5 314.7 Wood Chip Before: 4.64g(±0.01g) After: 3.29g (±0.01g) NA NA Table 2: Qualitative observations
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Historical Investigation into; How were the Nazi Government able to benefit from the Reichstag Fire? Word Count: 1‚752 Section A: Plan of the Investigation The subject of this investigation is to study how the Nazi government was able to benefit from the Reichstag on fire in 1933. I will conduct research into this topic using primary and secondary sources. This evidence will be discussed in section B. Two key texts‚ A.J Nicholls‚ Weimar
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