Identification of Metallic Ions Peter Jeschofnig‚ Ph.D. Version 42-0160-00-01 Kellie Long Purpose: To observe the different flames of alkali and alkaline metals. Procedure: Place a little bit of each element into the well plate. Then you soak a tip of a cotton swab in each solution. Then you place the cotton swab over the Bunsen burner until the flame changes color. observations The color of the flame is expected to be as follows: Metallic ion Flame color
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that time period‚ music created many conflicts between generations. Also in those decades‚ music created conflict between racial and gender classes. Glenn C. Altschuler‚ author of All Shook Up‚ discusses in this book all of these conflicts‚ and what rock ‘n’ roll did to aid or to discourage people of this time. The book starts with a boy named Josh‚ whose life changes the summer he turns thirteen. Josh’s parents are divorced; he lives with his mom in Boston‚ and visits his dad every summer in Chicago
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There is always a problem in an organization that must be resolved. There are many different types of decision making processes that an organization can use to help resolve these problems. This paper will examine some of the different types of decision making processes with examples from four organizations. This includes the decision making processes strengths and weaknesses‚ as well as comparing and contrasting them with each other. This paper will also describe how a problem can best be identified
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prey is reduced when the prey are at low densities c. the per capita feeding rate of predators is reduced when their density is high d. the per capita feeding rate of predators is reduced when their density is low e. none of the above Question 2. A copepod species (the predator‚ measured in copepods/m3 of water) feeds on algae (measured in cells/m3 of water) in freshwater lakes. Assume that the interaction is well-represented by the Lotka-Volterra predator prey model: where r = 1/week
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oxygen increases so does the number of fish observed. However‚ when the dissolved oxygen reaches 14 ppm the number of fish decreases to 10. So‚ 6ppm and 14ppm‚ 8ppm and 16ppm‚ and finally 10ppm and 18ppm‚ have a similar number of fish observed. 2. Develop a hypothesis relating to the amount of dissolved oxygen measured in the water sample and the number of fish observed in the body of water. If the amount of dissolved oxygen is increased‚ then the number of fish observed will increase. 3
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obtain a positive or negative reaction to decipher if the supplement was indeed protein positive. We also tested each supplement with a constant volume of H2O to have a standardized measurement to compare our data back to. In every mixture there was 5 ml of (stock solution/the three unknowns/our constant) separately mixed with 1 ml of each testing reagents. After running the experiments we can conclude that each of the three supplements do in fact contain some amounts of protein.
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of computer systems and to secure network-based transactions‚ demand is increasing for improved user authentication procedures to establish the identity of an actual user and to bar access to a terminal to anyone who is unauthorized. Personal identification using biometrics‚ i.e.‚ a person’s physical or behavioral characteristics has come to attract increased attention as a possible solution to this issue and one that might offer reliable systems at a reasonable cost. While traditionally this technology
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purpose of this lab was to study the specific characteristics of cations and anions‚ and ultimately to be able to identify an unknown substance based on our studies and tests using the logic trees developed through the experiment. A logic tree is a graphical display of the findings from this lab which‚ through a series of yes/no questions‚ elimination tests‚ will help us to identify and unknown sample. This lab will result in 2 logic trees‚ one for identifying cations and the other
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Essay #2 Tina Taylor William Jennings Bryan argues against the gold standard. What arguments does he give against the gold standard and why does it oppress the common people? William Jennings Bryan was against the Gold Standard because it artificially lowered inflation. In today’s times the Federal Reserve can print as much money as it wants and also control how the money circulates in the economy by buying and selling bonds. With the gold standard there was an infinite amount of gold that
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Mars’s electromagnetic field has dampened‚ making it more susceptible to interstellar heat and radiation‚ thus eliminating the life that could have existed. There are also other several factors including volcanic activity and evidence of salt oceans. 2. Why are scientists interested in whether water was or is on Mars? What do their tests and observations suggest about the possibility of water on Mars? Scientists are interested in whether water was or is on mars because this is the most direct clue
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