to tell which exactly which wavelengths of light are present if colors are blended. List the metallic elements (excluding the unknowns) used in the flame tests in order of increasing energy of light emitted. Strontium Chloride Calcium Chloride Lithium Chloride Sodium Chloride Barium Chloride Copper (II) Chloride Potassium
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Naming Chemical Compounds General Information: Scientists all around the globe use a standard method for naming chemical compounds. The standards were set up by an international committee sponsored by the International Union of Pure and Applied Chemistry (IUPAC). Having this standard makes life easier for people who use these compounds everyday. It would be tough to set up any experiment if scientists everywhere used different names for the same compound. It would also make the lab a
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Case: The Boeing 787 Dreamliner project began to develop in 2003 establishing as a main goal to innovate the concept of aircraft industry. This is the company’s most fuel-efficient airliner‚ being20% more fuel efficient that the 767‚ and first major airliner to use composite materials as the primary material in the construction of its airframe. An international team of top aerospace companies builds the airplane‚ led by Boeing at its Everett‚ Wash.‚ facility near Seattle and in North Charleston
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(See teacher background information in Flame Tests‚ Atomic Spectra and Applications Activity) Introduction: Have you ever seen a fireworks display? Where do all of the colors come from? Below are some links to the chemistry of fireworks: http://chemistry.about.com/od/fireworkspyrotechnics/Fireworks_Pyrotechnics.htm http://alchemy.chem.uwm.edu/amalgamator/NCW/ncw2001/fireworks.html In this activity‚ you will investigate the colors of flame produced by solutions of metal
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Daniel A. Parra Mr. Reimer Honors Chemistry‚ 5th 10/25/11 ‘Cause Baby‚ You’re a Firework How are the colors in fireworks produced? When I first thought about where the colors from fireworks came from‚ I thought that they came from food coloring that was mixed with gun powder. Also‚ from previous knowledge that I had about how neon lights were formed‚ I imagined that the electrons got excited when they got some sort of voltage or energy‚ and I also knew that when they got relaxed they emitted
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A three-year study with 72 chronic cocaine users compared an antidepressant drug called desipramine against lithium (a standard drug to treat cocaine addiction)‚ and of course a placebo as well. The subjects were randomly assigned to receive each treatment. Here are the results: | | Cocaine Relapse? | Group | Treatment | Yes | No | 1 | Desipramine | 10 | 14 | 2 | Lithium | 18 | 6 | 3 | Placebo | 20 | 4 | (a) Make a graph to compare the rates of cocaine relapse for the three
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INTRODUCTION Tesla Motors is a global enterprise specializing in the design‚ production‚ and marketing of electric powered vehicles founded in 2003 by the young businessman‚ Elon Musk. Elon is well known for co-founding paypal‚ and now he amazes the world again with his incredible vision of Tesla Motors‚ and being the main product architect. Tesla Motors appeals to the environmentally friendly market‚ by currently being the only company to sell a zero-emission sports car. Tesla’s fundamental
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ical Chemistry 1.which of the following pairs of compound will react? iC3H6+Br2 iiC3H6+Cl2 in sunlight iiiC3H6+H2O in the presence of sulphuric acid ivC3H6+H2O in the presence of concentrated sulphuric acid a.i b.i‚iii c.i‚ii‚iii d.all 2.liqiud y reacts with magnesium metal to produce a gas that burns with a pop sound when a flaming wooden splint is placed near it.liqiud y is most likely a compound that has the formula a.c2h5oh b.hcooh c.h3cooch3 d.c6h14 3.a compound p has the
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Silver Linings Playbook directed by David O. Russell is based on Pat Solitano‚ a former teacher who was diagnosed with Bipolar 1 Disorder after walking in on his wife cheating with the history teacher from the school they teach at. This paper will compare how the movie portrays Bipolar 1 Disorder‚ and distinguish the differences between the two by using the DSM-V as a resource. In addition‚ the DSM-V made changes to facilitate diagnosing Bipolar 1 and 2 earlier‚ instead of misdiagnosing for another
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Radio active safety : Protective Clothing: Wear latex or nitrile gloves with along with the full-length lab coat including the closed toed shoes. Wear safety glasses to avoid the exposure radioactive material. Introduction : Chemicals may be liquids‚ gases‚ solids or powders have the tendency to harm health when it used or handled improperly‚ those can be corrosive‚ toxic agents‚ reactive or flammables can generate fumes‚ vapors‚ dust and mists. Depending on the usage and the work it can enter the
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