“A Titration Competition” – Lab #8 1. Since all solutions and aqueous solutions have their own pH‚ it is important for all glassware to be clean and dry before performing a titration. Even a slight trace of a different solution could alter the pH and give an inaccurate titration reading. If the glassware is not completely dry after rinsing‚ the small traces of water could make the solution more dilute than it should be thus changing its concentration. 2. Air bubbles in the burette tip is a
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Experiment Report Title: Water Conductivity Level in Goa Gajah Research Question: How high is the water conductivity level of the water sources in Goa Gajah? Hypothesis: I predict the level of electrical conductivity of the water sources in Goa Gajah will be between the range of a normal drinking water‚ which is 0.0005 to 0.005 s/m. This hypothesis is based on the fact that conductivity largely concerns itself with the amount of salt in the water‚ and since none of the water sources are
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Chemistry 112: Anion Analysis Page 7 ANION ANALYSIS M uch of the work you will be doing in the Chemistry 112 laboratory will be concerned with identifying positive and negative ions‚ that is‚ cations and anions‚ in solutions whose composition is unknown. This procedure is called QUALITATIVE ANALYSIS. The modern chemist frequently wishes to identify the constituents in a very small amount of substance‚ and so he depends heavily on instrumental methods of analysis. While the procedures
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Test Item File Electronic Devices and Circuit Theory‚ 9e (Boylestad) Chapter 1: Semiconductor Diodes 1) An intrinsic semiconductor is one that is as pure as present-day technology can make it. 2) Electrons are the minority carriers in an n-type material. 3) Holes are the majority carriers in a p-type material. 4) The quantum-Volt (qV) is the unit of measurement for electron energy. 5) A free electron has a higher energy state than any that are bound to their nucleus.
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"Do different concentrations of solutions determine the mass of a potato?" Introduction: The way to get the full results of this lab was through the process of osmosis. Osmosis is the movement of water across a membrane into a more concentrated solution to reach an equilibrium. When regarding cells osmosis has three different terms that are used to describe their concentration. The first of these words is isotonic. Cells in an isotonic solution show that the water has no net movement and the amount
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Electrolytic Solutions Solutions are sometimes grouped according to their ability to conduct electricity. Substances whose solutions conduct electricity are called electrolytes and those that do not conduct electricity are called nonelectrolytes. Also electrolytes can be strong or weak. Under strong electrolytes we have NaCl and CaCl2 which are ionic compounds‚ HCI‚ HNO3‚ HBr and H2SO4 are under acids and NaOH‚ KOH‚ and LiOH are under bases. Weak electrolytes are ionic compounds and slightly
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5.05 Mixtures and solutions Lab report Ink Chromatography Chromatography is also used to compare and describe chemical substances. The chromatographic sequence of sorbed substances is related to their atomic and molecular structures. A change in a chemical substance produced by a chemical or biological reaction often alters the solubility and migration rate. With this knowledge‚ alterations or changes can be detected in the substance. Chromatography serves mainly as a tool for the examination and
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regression (LOIGT) Coding 0 = Death 1 = Alive The two post-operative status of the patients are death and alive coded by 0 and 1 respectively to use in binary logistic regression. Hosmer and Lemshow goodness of fit test sig value = 0.896 The analysis is fitted that means the analysis is compatible with the data and the logit model is expected to predict the post-operative status of the patient Block 0 Accuracy = 29% This shows the fluke accuracy about the post-operative status of the patient if none of the
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CHAPTER 5 Merchandising Operations and the Multiple-Step Income Statement ANSWERS TO QUESTIONS 1. (a) Disagree. The steps in the accounting cycle are the same for both a merchandising company and a service company. (b) The measurement of income is conceptually the same. In both types of companies‚ net income (or loss) results from the matching of expenses with revenues. 2. The components of revenues and expenses differ as follows: | | Merchandising | | Service | RevenuesExpenses
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DEPARTMENT OF TECHNOLOGY AND BUILT ENVIRONMENT Chinese culture‚ Chinese corporation culture and innovation How does a corporation implement innovation properly? Hengsong.TU & Xin.YUAN 06.2010 Master’s Thesis 1 Abstracts: 文化反映在人类生活中的很多方面，诸如做事情方式，沟通的礼节， 教育，历史事件，经济状况等等方面。在很大方面，一个国家的文化 会影响到企业的经营方式。通过当前比较流行的霍夫特德的文化区分 理论，我们了解到中国的文化特点体现为比较长的权利距离，集体主 义倾向，更男性化，强调风险规避以及考虑长期目标。因此，中国的 企业也长期处在中国文化的影响中，表现起来就是中国的企业更强调 集体文化，以及把企业当作家的思想。企业中存在许多的规章制度以 及等级观念，员工的晋升与个人的成就和服从相关联。通过这篇文 章，我们在一系列文献整理的基础上，更好的了解中国文化和中国企
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