placing them in contaminated water from the two different smokes it could be seen that the cilia on the gills had a slower beat rate then cilia that were not in the contaminated water. This supported the hypothesis that smoking will inhibit the ciliary action and lower the quality filter the greater affect will be exhibited by the effected cilia. Introduction:
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Lab Report Marisa McKinney P. 2 Purpose: To investigate the periodic variation of density in Group 4A elements. Background: When the elements are arranged in order of increasing atomic number‚ they exhibit periodic recurrence of properties. Elements in the same group in the periodic table tend to have similar physical and chemical properties. These similarities are due‚ in large part‚ to similarities among the electron configurations of the elements in a group. You can find periodic
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"18. Dehydration of 2- Methylcyclohexanol." Organic Chemistry Lab 2040L. XU Chemistry‚ n.d. Web. 12 Feb. 2013. 2. "Material Safety Data Sheet 2-Methylcyclohexanol." Http://www.coleparmer.com/Assets/Msds/97403.htm. Coleparmer‚ 19 Mar. 1998. Web. 12 Feb. 2013. 3. "Material Safety Data Sheet Methylcyclohexane." Sciencelab.com. Science Lab‚ 09 Oct. 2005. Web. 12 Feb. 2013. 4. Helmenstine‚ Anne M.‚ Ph.D. "How to Write a Lab Report." About.com Chemistry. About.com Guide‚ n.d. Web. 23 Feb. 2013
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Crystallization: Lab Report Theory/Introduction The purpose of this lab is to understand the concept of purification through crystallization. Crystallization is the process of purifying a substance‚ with the most adequate solvent. The process of crystallization came to be based on the principle of solubility. First‚ we must choose a solvent. The solvent is crucial to crystallization because it’s what will allow impurities to dissolve. Therefore‚ when selecting a solvent it is important that it
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CO2 Lab Report Intro Alka-Seltzer tablets are used to treat cold/flu symptoms as it produces CO2 when dissolved in water. The goal of this lab is to calculate the amount of NaHCO3 is needed to produce enough CO2 gas to fill the room. Experimental One Alka-Seltzer tablet was weighed on the analytical balance. Then a piece was measured out to be between 0.21 and 0.28 grams. 500mL of distilled water was added to a 600mL beaker. 80mL of water was mixed with 20mL of 6M HCl in a 150mL beaker. A
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Formal Lab Report #1 I. Basics Title of the Experiment: The Empirical Formula of an Oxide Authors: Section Number: Chemistry Location and Date II. Abstract The aim in this lab was to determine the empirical formula of an oxide of magnesium through combustion in air. This was achieved by heating an established mass of magnesium in air inside of a crucible‚ ultimately attaining a compound that contained Mg and O. The major result of the experiment was the empirical formula of the oxide of magnesium
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IB Chemistry Experiment 4 Composition of a Post-1983 Penny Lab Report Background: Through the use of percent composition one can easily find out how much of a certain element is in a compound or an item such as a post-1983 penny. The experiment will be using HCl a strong acid to dissolve all the zinc inside the outer copper shell. The reaction follows as such; Zn+2HCLZnCl2+H2‚ but there will be no reaction with copper. The portion that will be measured is the mass of copper left after all of
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Name: Nikia Martinez Class: Biology 240L L3-1201 Assignment: Electrocardiography Lab Report Due: April 3rd 2012 Professor: Dr. B. Schoffstall Introduction In a normal human being the heart correctly functions by the blood first entering through the right atrium from the superior and inferior vena cava. This blood flow continues through the right atrioventricular valve into the right ventricle. The right ventricle contracts forcing the pulmonary valve to open leading blood flow through the pulmonary
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between other cuvettes‚ for example‚ absorbance differences between cuvette 1s and 2s or 2s and 3s. It is assumed that the relative concentration of enzymes does not catch up that of iron cofactors. In other words‚ even though we put more iron cofactors to interact with enzymes after a certain point‚ it cannot speed the reaction further because no more enzymes can interact with extra iron cofactors. Furthermore‚ we can notice that even though the higher amount of iron cofactors indicates the higher absorbance
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Introduction The purpose of this lab was to identify unknown bacteria cultures using various differential tests‚ and my unknown bacteria is #17. The identification of these unknown cultures was accomplished by separating and differentiating possible bacteria based on specific biochemical characteristics. Whether the tests performed identified specific enzymatic reactions or metabolic pathways‚ each was used in a way to help recognize those specifics and identify the unknown cultures. The differential
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