PRE LAB REPORT Reynaldo Riboul TLC and Column Chromatography October 6‚ 2013 Table of Chemicals: Chemical Hazards Mol. Wt. Density Grams Moles Acetone Flammable‚ Irritant 58.08 g mol−1 0.791 g cm−3 2.0 g 0.0344 Hexane Flammable‚ Irritant‚ Dangerous to Environment 86.18 g mol−1 .6548 g mL−1 9.0 g 0.1044 Fluorene Very toxic to aquatic life with long lasting effects 166.223 g/mol 1.202 g/mL 0.3 g 0.00180 Fluorenone Irritant 180.20 g mol−1 1.13 g/cm3 0.3 g 0.00166
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has been Three Days Grace for as long as I can remember and it is mostly their music I turn to in times of distress.”Never Too Late” has been and always will be my favorite song by them. It helped me overcome a dark time in my life. The singer Adam Gontier developed an addiction to the prescription drug OxyContin In 2005. When he was in rehab he wrote the song"Never Too Late" about becoming sober. In the beginning of the song he says‚ “This world will never be what I expected‚ And if I don’t belong
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to improve their working conditions‚ industrial workers came together to form unions in the late 1800s. Sequencing As you read about the increase of American labor unions in the late 1800s‚ complete a time line similar to the one below by filling in the incidents of labor unrest discussed and the results of each incident. • Describe industrial working conditions in the United States in the late 1800s. • List the barriers to labor union growth. Key Terms and Names deflation‚ trade
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correct choice for each question. Answer all questions on the Scantron sheet by filling in the proper bubble with a #2 pencil. If you change an answer‚ erase the undesired mark thoroughly. Be sure to fill in the boxes for your student number‚ name and lab section; then correctly fill in the corresponding bubbles beneath them. A periodic table and other useful information are attached to the back of the exam. There are 4 exam pages and 26 questions. Check to be sure you have answered them all! 1. (zero
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Labor union Labor Unions began forming in the late 1800’s. They formed to provide workers with more rights. However they were opposed on many fronts. The unions faced an uphill battle against business owners and even other workers. From 1865 to 1940‚ the development of labor unions was generally a negative force leading to economic disruption and unnecessary laws that stifled businesses and hindered job growth. Worker’s parties started to shape in the late 1800’s. The thought behind them was to take
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Experiment 3: SN1 – Report Sheet Last Name: Abbassi-Mohadjel | First Name: Nora | Date: OCT. 26‚ 2012 | Section Number: 005 (Friday->1:35-5:35pm) | Objective: 1 mark (What is the purpose of this experiment?) In this lab‚ spectrochemical technique was used to determine qualitively the product of a reaction. The purpose was to learn what a SN1 reaction was with combining 2‚5-dimethyl-2‚5-hexanediol and HCl and to learn how to use an infrared spectrum for analyzing the reaction
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Back Laboratory Program SAFETY IN THE CHEMISTRY LABORATORY 786 Pre-Lab Extraction and Filtration 790 1-1 Mixture Separation 792 1-2 Water Purification 794 3-1 Conservation of Mass 798 4-1 Flame Tests 801 Pre-Lab Gravimetric Analysis 828 13-1 Separation of Pen Inks by Paper Chromatography 830 13-2 Colorimetry and Molarity 834 14-1 Testing Water 838 804 7-1 Separation of Salts by Fractional Crystallization 806 7-2 Naming Ionic
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1. Some theories of late adulthood are called self theories because they focus on individuals’ perceptions of themselves and their ability to meet challenges to their identity. They are theories that emphasize the core self‚ or the search to maintain one’s integrity and identity. (Other theories are called stratification theories because they describe the ways in which societies place people on a particular life path.) These negotiations to the challenges faced in late adulthood are crucial when
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ISC 1005C LAB WORKSHEET Interpreting the Weather Map OBJECTIVES: Upon completion of this lab‚ the student should be able to: ✓ Identify pressure systems on weather maps ✓ Develop wind directions/circulation from a pressure pattern on a weather map ✓ Identify frontal systems on weather maps ✓ Correlate precipitation and clouds phenomena to pressure patterns and fronts. INTRODUCTION: The History behind Weather Maps Creating a daily weather map was not possible
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described as one of the finest 19th century cities in Europe due to the quality of the architecture‚ not only restricted to the public and commercial buildings but also the long rows of tenement housing. The tenements were initially built to provide high density housing during the industrial revolution between the 19th and 20th century for a large number of people who were immigrating to the city for work. The word ‘tenement’ these days is a word which people more regularly associate with the slum
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