Chapter 1 1 Classify the following analyses as qualitative or quantitative. a an analysis that showed that Vegemite contains 0.55 mg of vitamin B1 and 0.80 mg of riboflavin per 5 g b detection of toxic materials in the gaseous discharge from a factory c confirmation of the presence of lead in a sample of blood d comparison of the concentrations of trace elements in glass fragments removed from the skin of a hit-and-run accident victim with those in the glass fragments from the broken headlights
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Lab Report Lab Report Lab Report Flame Spectroscopy: Applying Leap a Quantum Answer the following questions about the results of this activity. Record your answers in the boxes. Send your completed lab report to your instructor. Don’t forget to save your lab report to your computer! Lab Activity 1 Sample | Number of Bands | Colors Present | Cesium CalibrationStandard | 14 | Grey‚ aqua‚ green‚ yellow‚ orange‚ red | Cesium Spectrum from Chart | 12 | Aqua‚ green‚ yellow‚ orange‚ red
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One of the lab. It should include the name of the element (or unknown) examined and the color of the observed flame 2. Identify each unknown from Part One of the lab and briefly explain why you identified each unknown as you did. Part Two (Spectroscopy): 1. Create and complete a data table for Part Two of the lab. It should include the name of the element‚ the colors‚ and the wavelength values of the observed lines. 2. Describe the line spectrum of the star. Give the color and wavelength
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and a very minimal amount of grease to avoid unwanted contaminations in solution. When the methylene chloride and ether were boiled and evaporated‚ the remaining solution‚ the clove oil‚ was a slight yellowish color. Data/Results: The infrared spectroscopy
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Cited: 1. "What Is a Practical Application of Calculus in Medicine?" WikiAnswers. Answers‚ n.d. Web. 01 May 2013. 2. Shell‚ D. M. (2010). Integration in NMR. Retrieved 2012‚ from Chemwiki: http://chemwiki.ucdavis.edu/Physical_Chemistry/Spectroscopy/Magnetic_Resonance/Integration_in_NMR 3. Differential Calculus in Life Science. (2003). Retrieved 2012‚ from http://math.msu.edu/Related/bio/calculus.html 4. Neuhauser‚ C. (2004). Calculus for Biology and Medicine‚ 2nd edition‚. Pearson Education
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Unknown 2 Potassium Blue 2. Identify each unknown from Part One of the lab and briefly explain why you identified each unknown as you did. Unknown 1 was sodium because the flame was yellow. Unknown 2 was Potassium because flame was blue. Part Two (Spectroscopy): 1. Create and complete a data table for Part Two of the lab. It should include the name of the element‚ the colors‚ and the wavelength values of the observed lines. 1 2 3 4 5 6 7 8 9 Hydrogen(nm) Purple‚410 Blue‚440 Bright green‚510 Lime green
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example‚ has two prominent yellow lines (the so-called D lines) at 589.0 and 589.6 nm -- any sample that contains sodium (such as table salt) can be easily recognized using this pair of lines. One of the most dramatic triumphs of astrophysical spectroscopy during the 19th century was the discovery of helium. An emission line at 587.6 nm was first observed in the solar corona during the eclipse of August 18‚ 1868‚ although the precise wavelength was difficult to establish at the time (due to the short
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is Sodium‚ as the flames colors were burning with the same exact flame as the example Sodium. The second unknown from part one from this virtual lab is Potassium‚ the flames remained constant with the conclusions from the potassium. Part Two (Spectroscopy)
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While experimenting with spectroscopy in his laboratory Crookes discovered a lime green band in the spectrum of selenium‚ a band that belongs to no known element at that time. After a few years he succeeded in isolating the element‚ which he named thallium. But at the same time a French
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A ground breaking new tool used to study the heavens was introduced in the 17th century. This tool was known as the telescope. It revealed the cosmos in a different way than our naked eye could ever perceive. The telescope opened doors to countless stars‚ nebulae‚ galaxies‚ and a slew of never before seen wonders. With its creation came limitations and caused the need to improve and upgrade the methods in which the telescope functioned and find new ways of viewing the heavens.There are three main
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