Observation Zinc Shot: Silver color‚ some pieces are shiny while the majority is dull. Tear shaped pieces (round at base with pointed top). No odor. Zinc Granular: Silver in color‚ semi shiny‚ flaky appearance. No odor. Zinc Sheet: Sheet of metal‚ flat pieces that are about 3 inches wide & 2 inches in length & 0.02 inches in height. Each piece has a dull side and a shiny side. Silver in color‚ the dull side has a darker shade of gray. No odor. Zinc Powder: Gray very fine powder. No odor
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1) Explain why alveolar gas has a different composition from air. Atmospheric (external) air contains a high percentage of oxygen and nitrogen whereas alveoli gas contains a lower percentage of oxygen and a higher percentage of carbon dioxide. The differences in composition are due to the fact that gaseous exchange is taking place within the alveoli in the lungs. Oxygen is diffusing from the alveoli into the pulmonary artery and carbon dioxide is diffusing back into the alveoli from the pulmonary
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Modern Music Composition Composition has been an ever-changing entity in our society. Music composition is also a very alternating subject of study. You have to keep up to date when you wish to compose a piece of music. This is strictly due to the progression of music in this day in age. If you fail to study‚ the music you are writing may‚ very well‚ upset the music community with old or potentially outdated material. The only way to stay up to date with composition is to listen to a lot
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The Raven on Composing Edgar Allan Poe’s essay “The Philosophy of Composition” first took flight in the 1846 April edition of Graham’s Magazine. As someone who enjoys the emotional spontaneity accompanied with my favorite accomplishments‚ this essay goes in the face of how I feel. While this style may have been as the Edgar Allan Poe’s bird flies‚ it is clearly not the only way to success as made cleared by the continued re-writing‚ re-vamping‚ and re-issuing of the highly successful Whitman works
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Experiment #1: Determination of the Solid-Liquid Phase Diagram for Napthalene-Biphenyl Using Thermal Analysis Objective To apply thermal analysis to the two-component system‚ naphthalene-biphenyl at atmospheric temperature. The analysis will be represented by a solid-liquid phase diagram (freezing point diagram). Theoretical Principles Phase Equilibria and the Gibbs Phase Rule This experiment is conducted in order to study a condensed system (solid-liquid) at constant temperature (atmospheric
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Gravimetric Determination of Calcium ABSTRACT Determining the mass of a pure compound is a method of a gravimetric analysis. One of the gravimetric analyses is the precipitation; it is a method of separating the analyte from the unknown sample as a precipitate where it will be filtered and converted into a known composition that can be weighed to determine its mass (Skoog et al‚ 2013). Determining the mass of calcium by using gravimetric analysis was the objective of the experiment. A 25 mL
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The Penny What do you think about the penny? The penny is a coin that is worth one cent. It is made of copper and zinc. Should we keep this coin or get rid of it? The thing is‚ we should get rid of it. We shouldn’t keep the penny because it is worthless‚ wastes time‚ and costs more to produce than it is worth. The penny takes up too much space in many ways. The penny is rarely used and is usually just put or thrown away. “We often store them in jars...” (Sommer). Why do people store them in jars
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Penny-Ante Equilibrium Introduction What is equilibrium? What happens to the amount of reactants and products when equilibrium is reached? What if more reactants or products are added to a system already at equilibrium? In this activity‚ pennies will be used as reactants and products in a reversible reaction to answer these questions and learn more about the fundamental nature of equilibrium. Concepts • Reversible reactions • Equilibrium • Equilibrium constant • LeChatelier’s principle Materials
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A Resolution to stop making the Penny Penny Production shouldn’t be stopped. Some of the problems that will arise are that prices will increase‚ the poor will suffer‚ and nickels cost even more than pennies to make‚ thus wasting more of our money. According to Susan T Leadly‚ an About.com Guide‚ “Americans are traditionalists and the Lincoln cent is the epitome of modern day circulating coin tradition.” We must keep using the penny because eliminating it would hurt us‚ not help us. First of
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Determination of Refractive Index of Prism using Spectrometer and Various Light Sources Dimain‚ Marion; Gonzales‚ Jade; Pancho Jr.‚ Ronel; Viloria‚ Matthew David College of Engineering‚ University of the Philippines‚ Diliman‚ Quezon City 1101‚ Philippines msdimain@yahoo.com jadegonzales019@yahoo.com ronelpancho@yahoo.com tewhmat.liv@gmail.com Abstract The study aims to measure the refractive index of a triangular prism using a spectrometer‚ utilizing different gas discharge tubes as light source
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