Preparation of an Acetic Acid Ester Abstract: 14.1 g of octyl acetate were synthesized from the esterification process using 20.0 ml of acetic acid and 17.9 g of n-octanol. The theoretical yield was 23.8 g of octyl acetate. The percent yield was 59.2%. The purification of the final ester was confirmed by boiling point (186-199°C) and infrared index (nD=1.419). It was a colorless liquid that had a slight fragrance of orange and indescribable chemicals. The Infrared spectra confirmed ester
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Michelangelo’s Sogno is a black chalk drawing on unprepared‚ cream-colored paper. Slightly larger than 8 x 12 inches‚ the drawing requires close-hand examination. At the center of the Sogno‚ an idealized male nude perches precariously on an open box filled with masks. His upper torso twists to his left as he leans on a sphere for support. He turns his head in the opposite direction‚ looking upward and over his right shoulder to watch a winged creature descent from above. Considerably smaller
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Thermochemistry Laboratory Report Abstract The purposes of these three experiments are to determine the heat capacity of a calorimeter and with that data‚ confirm Hess’s Law and observe enthalpy changes within reactions. By measuring the change in temperature that occurs with the interaction of two different reactants‚ we were able to determine both the calorimeter constant and the change in enthalpy of a given reaction. The results were rather mixed‚ as some numbers more closely resembled the
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In this local experiment‚ the goal was to use a polyacrylonitrile (PAN‚ (C3H3N)n) in addition to a chalcogel. This chalcogel is efficient at adsorbing I2 gas. Although just the chalcogel itself isn’t mechanically stable especially if it is to be used in the field for actual radioactive iodine capture. By creating a hybrid substance with the PAN and the chalcogel in a mixture‚ the theory is that they can create a mechanically stable efficient iodine capture method. This experiment did not study the
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Synopsis: The main aim of the experiment is to find out the amount of calcium carbonate in toothpaste through back titration since calcium carbonate does not dissolve in water. A roughly weighed amount of calcium carbonate is mixed with hydrochloric acid and then titrated against sodium hydroxide. When the indicator turns from pink to orange‚ the volume of sodium hydroxide used is taken down. After doing some calculations‚ the average percentage of calcium carbonate in toothpaste is 19.2%. This average
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1. Trade and specialization (Chapter 3) a) Country A Resources devoted to clothing Output of clothing Resources devoted to food Output of food 100% 28 0% 0 80% 25 20% 4 60% 17 40% 11 40% 12 60% 15 20% 7 80% 18 0% 0 100% 21 i. Production Possibility Frontier of Country A ii. When the production of food is increasing‚ the opportunity of food in terms of clothing is negative; this is because the opportunity cost of clothing is larger than the opportunity of cost of food.
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PSY104 WRITTEN SCRIPT Recreation and Family Center Proposal- Final Project PSY 104 September 1‚ 2014 Enter Prezi presentation URL: Introductory Paragraph: Hello City Council I am here today to introduce my proposal to you and explain to you why we need a new Recreation and Family Center built in our community. I want you to consider what it has to offer to everyone in the community. 1. ROOM #1 – Infant Room is for ages birth to 12 months Paragraph
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Investigation on the effects of Temperature‚ pH levels‚ and Enzyme Concentration on the reaction rate of the Decomposition of Hydrogen Peroxide by Catalase The purpose of this investigation is to figure out how temperature‚ pH‚ and enzyme concentration affect the reaction rate of an enzyme. It’s important to understand how certain factors affect enzymes because of their crucial role in the metabolic processes of life. Enzymes lower the activation energy necessary for a chemical reaction to
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by the many works I saw from ancient times. They ranged from ancient Greek/Roman statues‚ Indian carvings‚ Egyptian mummies‚ to even Central American relics which we haven’t learned about in class. The piece that stood out to me the most‚ and what I will focus on for the rest of this essay‚ is the Aphrodite (Venus) statue‚ which is a Roman copy of the Greek original from the 1st century CE. Upon arriving at the Carlos Museum‚ Aphrodite (Venus) is one of the first works you immediately
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Sullivan put Keller’s one hand under the spout and wrote the word “w-a-t-e-r” (Keller) with finger on the other hand. Keller understood “that w-a-t-e-r meant the wonderful cool something that was flowing over my hand” (Keller) the connection between what she felt
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