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    Percent Acetic Acid in Vinegar Introduction: Acetic acid is reactive when combined with calcium carbonate. In this lab‚ we will use vinegar for its acetic acid and egg shells for their calcium carbonate. Marketable vinegar differs in its acetic acid concentration from 4-6%. Calcium carbonate reacts with the acetic acid in vinegar to produce carbon dioxide‚ water‚ and calcium acetate as represented by the equation: CaCO3 + 2HC2H3O2 CO2 + H2O + Ca(C2H3O2)2. The calcium carbonate reacts with

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    Five Percent Nation: The Non-Ascribed Faith The Five-Percent Nation is a revisionist movement in America that began in 1964. It borrows the philosophies from the traditional Islam. In addition‚ the Five percenters otherwise‚ known as Nation of G-ds’ and Earths‚ resulted from the departure of the Nation of Islam in 1963. Although they are a sole religion‚ the Five Percent Nation does not consider themselves a religion‚ but merely a religious affiliation‚ followed by Islāmic tradition defined as “culture”

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    In‚ The One Percent Solution‚ by Gordon Lafer‚ he argues that lobbyist groups are taking advantage of the 2008 recession to work to advance the interests of the wealthy. This is being done at the expense of the poor by influencing the policy that government institutions introduce‚ vote on and implement. The lobbyist’s underlying agenda is to try and change the relationship between the workers and the owners as well as shift the expectations for government protections that the workers currently have

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    1. A student neglected to add sodium carbonate when extracting the tea leaves with hot water. Yet a very high yield of caffeine was obtained. The crystals melted at 202-214°C. Explain. • The sodium carbonate is supposed to be added when extracting the tea leaves with hot water in order to help purify the caffeine. So since the student neglected to add sodium carbonate the caffeine won’t be pure but the student would still be able to recover a large amount of caffeine. The literature melting point

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    or not‚ it is still unethical. In June of 2001 six former and current female Wal - Mart employees filed a sexual discrimination suit against the company. The lawsuit alleged that Wal - Mart failed to provide equal employment for women. Seventy percent of the workforce was comprised of females but only a very small percentage of the females were in management positions. “Wal - Mart is the nation’s largest employer of women but‚ unfortunately they are being treated without dignity and respect.”

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    Purpose: To find out the percent yield of copper in the reaction between copper sulfate (CuSO4) and Iron (Fe). Materials: Balance 100-mL beaker 250-mL beaker Bunsen burner Copper sulfate crystals Glass stirring rod 100-mL graduated cylinder Iron filings Ring stand and ring Wire gauze Procedure: 1. Record mass of clean 100-mL beaker. 2. Add 8.0 grams of copper sulfate crystals to beaker. 3. Add 50.0 milliliters of distilled water to the crystals. 4. Put wire gauze on ring on ring

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    Determining The Percent Copper and Zinc in Pennies From Density Purpose: Practicing determine the density of the solution. Developing the method for determine the percent of density for the solution. Examining the linear relationship by learning to use the best-fit straight line. Using the linear relationship to determine the percent of density by the solution. Be familiar with recording data and observations. Methods & Material: Methods: Weight the mass for the different percent of zinc and

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    should be used more efficiently and accurately to attain the necessary amount of reactants. Lastly‚ there was a random error with measuring the temperature of the solution. Throughout the three trials‚ the temperature was inconsistent. As seen in table 1‚ the temperature varies from 23.8‚22.4‚ and 22.0. This fluctuation in temperature was not

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    Down with the Top Ten Percent Many colleges try to have a racially diversified environment by using affirmative action. Some colleges used the point system which would give an edge to minorities over Caucasians. The supreme court of Texas prohibited colleges to use affirmative action. When affirmative action was prohibited‚ minority enrollments at colleges decrease. To racially diversify colleges‚ Legislature passed the top ten percent rule. The top ten percent rule states any high school

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    In the data table above‚ the mass of penny‚ copper‚ and zinc was needed in order to determine the percent composition of copper and zinc. The mass of penny was taken on the scale in the beginning of the procedure before anything was done to the penny‚ and it was 2.51 grams. After the reaction with the hydrochloric acid and drying the copper‚ the mass is 0.35 grams. To get the mass of zinc‚ the mass of the penny was subtracted by the mass of copper. The mass of zinc is 2.16 grams. The penny is 14%

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