Chemistry 2 Jorge Nuñez Ms. Principe / Period 2 February 8th‚ 2011 Aim: How are we going to determine the empirical formula of a compound? Do Now: 1) What is the percent by mass of oxygen in H2C2O4? H2 = 2(1) = 2 ; C2 = 2(12) = 24 ; O4 = 4(16) = 96 Gram Formula Mass = 90 Percentage of Oxygen = 6490 x 100 = 71% 2) Calculate the percentage of water: -Mass of empty crucible and cover = 11.7g -Mass of crucible‚ cover‚ and hydrate before heating = 14.9g -Mass of crucible
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Abstract Three tests were performed to determine the identity of unknown number 34‚ a gram stain‚ citrate utilization test‚ and a urease detection test. These tests are explained in detail‚ and the method of performing the tests is described. The tests showed that the bacterium was gram-negative bacilli that did not utilize citrate‚ and the ability to hydrolyze urea using urease. These results indicate that the identity of unknown number 34 is Proteus mirabilis. Introduction Proteus mirabilis is
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Topic: Millikan Oil-Drop Experiment The Millikan Oil-Drop experiment was the first experiment to determine the charge of an electron. In 1909‚ Robert Millikan ultimately came up with a way to determine this charge through finding the minute electric charge on a droplet from an oil mist. Basically‚ Millikan started with an enclosed chamber that had two flat plates inside‚ one with a positive charge and one with a negative charge. The portion is split up by the positively charged plate so at the beginning
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of Contents Abstract 1 Introduction 1 Objectives 2 Theory 2 Apparatus 7 Procedure 8 Results 10 Calculations 14 Discussion 20 Conclusion 21 Recommendations 21 References 22 Appendices 22 Abstract This experiment was performed in order to determine the molarity of a solution and the percent by mass of acetic acid‚ CH3COOH in vinegar. Acetic acid is monoprotic and belongs to the carboxyl family of organic compounds. The titration method is used to neutralize the acids by using the standardized
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people will be able to afford to take out a mortgage so fewer houses will be sold. This will have an adverse effect on the success of UK estate agents as they will have depleted revenue streams. Inflation is another significant factor which determines the success of UK estate agents. Inflation usually occurs when a country prints more money than is justified by the country’s wealth. Inflation causes prices to rise each year‚ the UK has an inflation target of 2%‚ which is set by the Bank Of England
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BY JG Can the influence of Nature and Nurture on two souls be compared? Nature and Nurture both determine Huck’s and Jim’s personality ad behavior. Nature gives them their inborn traits often. Nature is how they are treated‚ and Nurture is the society‚ who natures them‚ and society nurtured them. Nature helps Huck become the person he is because the way your treated is the way you treat other people at times. Huck is thirteen whose place in society is second to a slave‚ like Jim. Huck’s father
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Lab: Flame Test Purpose: to determine the ID of 2 unknown substances Background Information: Every atom consists of a nucleus with tiny electrons whizzing around it. The further away from the nucleus they are‚ the more energy the electrons have. If a metal atom is heated‚ the electrons get enough energy to jump higher away from the nucleus‚ they become “excited”. When they fall back closer to the nucleus (back to their ground state)‚ they give off this extra energy as light. Why is the
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Determine technology to support admission systems in istana budaya Technology is the making‚ modification‚ usage‚ and knowledge of tools‚ machines‚ techniques‚ crafts‚ systems‚ methods of organization‚ in order to solve a problem‚ improve a preexisting solution to a problem‚ achieve a goal or perform a specific function. It can also refer to the collection of such tools‚ machinery‚ modifications‚ arrangements and procedures. Technologies significantly affect human as well as other animal species’
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Limitations Our experiment consisted of numerous limitation and uncontrolled variables which impacted on the validity of the outcome. These limitations include: the lack of repetition resulting in possibilities of outliers‚ inadequate temperature range and limited sample size at each group. The experiment also existed two other uncontrolled variables which are the size of liver and the amount of Hydrogen Peroxide‚ hence altering the authenticity of the practical result. At each of the five experimental
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Individual Assignment Examine the factors that determine the price of houses in a free market. How and to what extent could government policies affect house prices? Your research is to be mainly concentrated on UK housing market. However‚ you can also include references based on different countries. You are required to write a report analysing the current housing market from 2006 to 2012. You need to explain the factors that determine demand and supply of houses in UK during the above
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