Chemical Gas Tests Procedure Part 1: Hydrogen and Manganese Dioxide 1. Inserted 4mL of hydrogen into a test tube 2. Scooped a little amount of manganese dioxide on the end of a wooden splint 3. Allowed the tip of the splint to flame using the Bunsen Burner 4. Allowed the reaction to proceed for a total of 15 seconds. 5. Placed the glowing splint into the test tube 6. Recorded the results Part 2: Magnesium strip and Hydrochloric acid 1. Poured 3mL of hydrochloric acid into a test
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BIOL 1020 Lab Assignment: Virtual Microscopy Start by re-saving this file as follows: lab_surname_virtualmicroscopy.rtf‚ substituting your own surname. Type your responses to the questions below where indicated. Remember to save your work frequently. Viewing Magnification‚ Field of View‚ and Specimen Size 1. On the UD Virtual Compound Microscope‚ examine the onion root tip slide at 400X viewing magnification. Ensure that the image is centred. What is the approximate size of an onion root
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Review Sheet 1 Results 1. Describe two variables that affect the rate of diffusion. Your answer: Two variables that affect the rate of diffusion are the MWCO membrane and the solute concentration. Increasing the membrane size and solute concentration will also increase the average diffusion rate. Decreasing the membrane size and solute concentration will reduce diffusion rates and can even prevent all diffusion. 2. Why do you think the urea was not able to diffuse through the 20 MWCO membrane
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Determination of the relative atomic mass of lithium Introduction: For this investigation I will determine the Relative atomic mass (Ar) by using two different methods. In the first method I will dissolve a piece of lithium of a known mass in water‚ I will then collect the hydrogen gas produced‚ which can be used to calculate the relative atomic mass of Lithium. In the second method I will titrate the resulting solution of lithium hydroxide with a known concentration of hydrochloric acid‚ this
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practice. SESC Laboratory intends to specialize in analysis and data acquisition from soil‚ water‚ air‚ sediments‚ ecological and
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leaving him‚ little to no money‚ and not being on good terms with any of his friends. His goal was to find a way in which he could maintain a steady flow of income and live a content life. Which he met successfully. To begin‚ Chris invested in Bone Density Scanners‚ which he thought would be a spectacular investment. He got to a point where he wasn’t selling any of the scanners and wasn’t making enough money to sustain the family. He couldn’t pay for his abundant amount of parking tickets when the police
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Safety in a microbiology laboratory is important in the prevention of infection that might be caused by the microorganisms being studied. This laboratory does not require the use of virulent human pathogens. However‚ many types of microorganisms are potentially pathogenic. This means that‚ although they would not cause disease in a normal healthy host‚ they might possibly do so if a large enough quantity of the microbes came into contact with a compromised host‚ such as by wounds and cuts. In
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ABSOLUTE AND RELATIVE SURPLUS VALUE: A REVIEW ESSAY In contemporary social science‚ the concept of “value” has attained currency in such disciplines like Economics‚ Sociology‚ Political science etc. in these disciplines‚ value is considered as those essentials needed by members of a society. It is further seen as scarce resources pursued by competing groups. Value in political economy‚ basically refers to that portion that creates wealth or the so called reward for the “risk taker”‚ the entrepreneur
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Implementing Change in the Clinical Skills Laboratory For the last several years‚ the nursing shortage has continued to influence the nursing faculty and the acceptance of nursing students. According to Walrath and Belcher (2006) 32‚617 qualified applicants were denied entrance into nursing schools in 2005 because of the shortage of qualified nursing faculty. The schools of nursing have continued to increase enrollment‚ yet the faculty and infrastructure has been unable to accommodate the demand
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Relative Isolation on Sub-Saharan Africa Relative isolation affected the development of sub-Saharan African cultures. The lack of contact with other African societies and non-African societies helped shape many distinct groups with individualistic forms of religion‚ language‚ and customs. Religion can only spread by contact with other people. There are two main religions in the Middle East and in Europe that have gained dominance and fight to maintain power. Religions such as Greek mythology
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