Aim: determine the mass of calcium carbonate in chicken eggshells and hence its percentage by mass Apparatus Uncertainty 25.00 cm3 pipette ± 0.03 cm3 50.00 cm3 burette ± 0.05 cm3 250.0 cm3 volumetric flask ± 0.3 cm3 50.0 cm3 measuring cylinder ± 0.5 cm3 Electronic balance ± 0.01 g Uncertainty of apparatus Measurement Mass of eggshell = 3.15 ± 0.01 g Volume of HCl added = 50.00 ± 0.5 〖cm〗^3 Volume of solution = 250.0 ± 0.3 〖cm〗^3 Volume of NaOH pipetted = 25.00 ± 0.03 〖cm〗^3
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Analysis of an Iron-Copper Single Replacement Reaction Martin Sun Purpose The purposes of this experiment were to: determine the number of moles of iron reacted; determine the number of moles of copper produced; and calculate the ratio of moles of copper to moles of iron. Materials and Methods Materials and methods for this laboratory followed those laid out in Experiment 6A on pages 56-59 of Essential Experiments for Chemistry by Morrison and Scodellaro with the following exceptions: one iron nail was
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the experiment is to find out what effect on surface area has for dissolving antacid tablets. The method used is to have crushed up tablets‚ for more surface area‚ and whole tablets‚ less surface area‚ to see which of the two subjects dissolve faster. The results for this experiment have shown up to be: the crushed tablets generally dissolve faster‚ rather than the whole tablets. Introduction The antacid tablet‚ both crushed and whole‚ started off as a solid state. And both after a minimum of
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What is tablet PC Tablet is portable computer whose primary input device is touch screen. Other characteristics are tablet shape and size‚ wireless connection to Internet and local area networks. They are powered by variety of operating systems. Some are proprietary ones like Apple iPad iOS‚ Amazon FireOS or HP webOS‚ but majority of tablets are running on various Windows 8 editions and Android operating system. History of tablets Tablet pc computers are derivate of many different technologies
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contents 1. Research and Markets; Global and China Tablet PC Industry Chain Report‚ 2010-2011 - Touch Screen & RAM Manufacturers the Biggest Beneficiaries from the Tablet PC Market..................................................... 1 07 April 2013 ii ProQuest Document 1 of 1 Research and Markets; Global and China Tablet PC Industry Chain Report‚ 2010-2011 - Touch Screen &RAM Manufacturers the Biggest Beneficiaries from the Tablet PC Market Author: Anonymous Publication info: China
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so-called post-PC era where tablets PCs are all set to take over computing world? One important element of the laptop design has stayed persistent during the past 20 years‚ the conventional flip lid‚ protecting the screen and providing a sturdy base for a the keyboard it’s the back-bone of any laptop. But with the emergence of the tablet market‚ advances in technology and changing materials this could be about to change. The rise of tablet PCs means laptops must adapt‚ while tablets and laptops are both
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Tablet vs. Paper: The Effect on Learners’ Reading Performance Hakan DUNDAR ∗∗∗∗ Kırıkkale University‚ Turkey Murat AKCAYIR Kırıkkale University‚ Turkey Received: December‚ 2011 / Revised: June‚ 2012 / Accepted: June‚ 2012 Abstract The purpose of this study is to compare primary school 5thclass students’ electronic text reading performance‚ reading speed and reading comprehension with tablet PCs and printed books. This study examined a sample of 20 students. The students were randomly divided into
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Taylor Hardy Period 4 US History B Summary The “Iron Curtain” speech by Winston Churchill and the election speech of Joseph Stalin contain the similarity that they both are telling the audience what should and has happened. In Winston Churchill’s speech he outlines what has happened throughout World War II and the Cold War and how he thinks it should be handled and dealt with. In Joseph Stalin’s speech he relays a similar time line while also including the Soviet Unions timeline and election
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In most of The Epic Poem of Gilgamesh‚ the twelfth tablet does not exist in most of the epic. This section is not included in some translations and versions. The authors of this epic poem added this tablet to this poem‚ but the reason why is still not found. It does not keep up a correspondence with the rest of the poem and this tablet also disagrees with some events that are a main focus. In The Epic Poem of Gilgamesh Tablet XII‚ Gilgamesh drops a stick through a small hole in the floor of the
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TABLET PCs Combines Simplicity of Paper with Full Power of Windows-Based Computing For the past few years‚ the Personal Digital Assistant (PDA) has grown tremendously popular. However‚ due to size restrictions‚ it has always served as a secondary device to the desktop computer. So a number of hardware manufacturers unveiled a new form of communication‚ the Tablet PC. What exactly is a Tablet PC? It is a notebook PC with a touch-sensitive screen and is a bit larger than the size of a
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