Abstract The purpose of this lab was to study the composition of hydrates. Hydrates are ionic compounds that are chemical compositions made of water and salt. A main objective was to remove water from the hydrate by heating‚ and determine the amount of water that was in the hydrate. After doing this‚ one had to predict the empirical formula for hydrated copper sulfate. In doing this lab‚ one was able to see the gradual change in the composition of a hydrate into an anhydrous salt. The lab was
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ABSTRACT By calculating the difference in the mass of the hydrate copper (II) sulfate and the anhydride we were able to determine the mass of water in the hydrate. This information was then used to determine the empirical formula of the hydrate‚ defined as a compound formed by the addition of water to another molecule. In the first trial‚ the mass of water in the hydrate was determined to be 0.41 g‚ while in the second trial the mass of water was 0.52 g. Moles of water associated with a single
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All compositions are composed of literary units called paragraphs. The purpose of a paragraph is to carefully explain and develop a given idea or topic that is a part of a paper’s thesis. Each unit is then segmented into a variety of sentences which are used to develop the main idea of the paragraph. Almost always‚ paragraphs need a central sentence called the topic sentence. This sentence tells the reader exactly what subject he or she will expect to find in the rest of the paragraph. The topic
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Composition 1 The human desire to look attractive is universal and because of this‚ cosmetic surgery is now a multi-million dollar industry. Write a letter to the editor of Hong Kong Express about the obsession with physical beauty. Dear Editor: I am writing to express my obsession with physical beauty. The recent case of a famous female celebrity in Hong Kong who receiving multiple cosmetic surgeries voraciously has been brought to public attention: she lost her money‚ lost her face and above
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Board composition The board of directors plays a central role in the corporate governance mechanism. The board is responsible for directing and controlling the business and is accountable to shareholders for its performance. High profile failures such as Enron have underlined the dangers of an ineffective group of non-executive directors and the severe problems that can arise when their independence is compromised through conflict of interest. The cadbury recommendations had substantial impact on
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Writing has never been my favorite activity. Before this class I took English Composition class in Hocking College and I had chance to write several essays about different topics. Before Hocking College I never had written an essay in English language. So going into research class did make me a little nervous. As a middle aged women ‚ out of school for 20 years and English as a second language I am probably have a little disadvantage compared to the other kids ‚ fresh out of highschool but I welcome
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Original Composition While the cancerous fumes entered my lungs‚ the life threatening chemicals made me feel relaxingly calm‚ so I continued anyways. That was when I was still a kid‚ a fourteen year old nicotine addict‚ presently I am sixteen. I still remember those days in the past. Sometimes I used to question myself‚ “When will this addiction cease?” I have never obtained an answer to that question‚ until recently‚ when I experienced the loss of my best friend. The cause of death was from second-hand
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Composition and Inverse Student Name MATH 222 Week 5 Assignment Instructor Name Date Composition and Inverse This week assignment was to understand and solve for composition and inversion. With the given problems and functions I will demonstrate how to compute a problem using composition. Then finally I will demonstrate how to solve a function using inversion. I will define the following functions to solve the problem. f(x)+2x+5 g(x)=x^2-3 h(x)=7-x
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1. Opportunities Opportunities are a much-debated topic in that it affects everybody in their daily lives. Some people criticize the importance of opportunities‚ who argue that without knowledge and skill the opportunities are doomed to slip away. They believe that knowledge and skill are more important than opportunities. But people who advocate the importance of opportunities‚ on the other hand‚ argue that opportunities are the most important factor in their lives. Without opportunities‚ they
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Composition and Seperations Lab Report : Lab # 2 T.A: Thushara Samarasinghe Chem 184 Spring 2013‚ Section : 315 Date: 2/6/13 Signature:……………………………… Introduction: When a kernel of popcorn is heated‚ pressure builds and‚ depending on the percent of water in the kernel‚ the kernel pops open and popcorn is produced. The percentage of water in each kernel differs between brands of popcorn. If the steam produced fails to pop the kernel‚ the kernel becomes hard and burns. The purpose
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