Science
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4,610 Essays on Science. Documents 2,401 - 2,430
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Kinetic Study of the Hydrolysis of T-Butyl Chloride
Kinetic Study of the Hydrolysis of tert-Butyl Chloride CH 236-A8 Group 7 Authors, Reviewers, Editors: J. Foncea, J. Messner, K. Simmons Introduction In organic chemistry, there are two different types of nucleophilic substitution reactions: SN1 and SN2. SN1 signifies unimolecular reactions. Also known as the first order reaction, the reaction rate is based only on the concentration of one reactant and can be expressed as r = k[A]. For bimolecular reactions, or SN2, the reaction
Rating:Essay Length: 2,635 Words / 11 PagesSubmitted: March 10, 2019 -
Kinetics Lab
Introduction The kinetics lab was conducted in order to determine the rate law and activation energy for the bleaching of brilliant blue dye. In order to accomplish this, colorless solutions created as a product of the decomposition of the dye, a spectrometer and Beer’s Law were utilized. Additionally, two different temperatures and the two-point form of the Arrhenius equation were utilized to determine the reaction’s activation energy. Results and Discussion Two experiments, one using room
Rating:Essay Length: 538 Words / 3 PagesSubmitted: March 15, 2018 -
Kinetics of Hydrogen Peroxide
Kinetics of Hydrogen Peroxide February 22, 2007 Chem. 1130 TA: Ms. Babcock Room 1830 Chemistry Annex PURPOSE OF THE EXPERIMENT Kinetics of Hydrogen Peroxide The major purpose of this experiment is to determine the rate law constant for the reaction of hydrogen peroxide and potassium iodide. In this experiment, the goal will be to try to measure the rate law constant at low acidity, since at low acidity, anything less than 1.0 x 10-3M, the
Rating:Essay Length: 2,364 Words / 10 PagesSubmitted: March 25, 2010 -
Kkkkkkk
The following assignment is based upon Service Request SR-ht-003, "Develop a Design for a Fleet Truck Maintenance Database." You only need to describe assumptions, changes, and additions you make to the documentation provided in the assignment. You do not need to build a database. You are creating an entity relationship diagram. You cannot build the tables in Access and then print out the Access ERD. You need to build an ERD from scratch so you
Rating:Essay Length: 283 Words / 2 PagesSubmitted: May 13, 2011 -
Klebsiella Bacteria
A very important technique in Microbiology laboratories is identifying unknown bacteria cultures. Unknown identification is used for practical purposes, such as diagnosing diseases or determining treatment of an infection. Microbiologists identify unknown bacteria to determine new and emerging infectious diseases and current diseases to determine if any kind of treatment or antibiotics can be used. Some bacteria do not have distinguishing morphological features, so there are different kinds of test that can be performed
Rating:Essay Length: 2,521 Words / 11 PagesSubmitted: February 24, 2010 -
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Rating:Essay Length: 2,146 Words / 9 PagesSubmitted: April 24, 2011 -
Knowledge Governance and Value Innovation in the Asian Context’?
Knowledge governance in Asia is probably not as vibrant in comparison to the rest of the world. In the past, many Asians rely on the apprenticeship system and this practice is still dominant in some trades. Many Asian believes that skills and knowledge should be passed on from one generation to another by word of mouth and not widespread as it will contort the original significance. They also believe that by sharing knowledge, they will
Rating:Essay Length: 262 Words / 2 PagesSubmitted: January 27, 2010 -
Koch’s Postulates
Koch’s Postulates Introduction Koch created four guidelines to determine the causal agents of disease in humans, animals, and plants. Koch proved that a disease-causing agent could be transferred from one organism to another and create the same illness. Isolation of pure cultures and the introduction of the disease-causing agent to a healthy organism will transmit the disease and infect the inoculated organism. Koch’s four guidelines by which one must follow to transmit a disease from
Rating:Essay Length: 963 Words / 4 PagesSubmitted: December 30, 2009 -
Kogi Tribe
In studying the indigenous Kogi tribe there are many questions that I found compelled to answer in order to understand these people and their beliefs. I believe it is important that we understand these peoples authenticity, their understanding of the world, their fears and concerns about the environment, and if these people are qualified to judge our behavior. Also, I contemplated why their area as the heart of the world, what their fears are, what
Rating:Essay Length: 729 Words / 3 PagesSubmitted: January 22, 2010 -
Kolb Learning Cycle
The Kolb Learning Cycle The Kolb Learning Cycle is the process by which students attend to and understand their experiences, and consequently modify their behaviors. The Kolb Learning Cycle is based on the concept that the more a student reflects on a task or a problem, the more often the student has the opportunity to modify and refine their efforts concerning the task or problem. The Kolb learning Cycle contains the following four stages: experiencing,
Rating:Essay Length: 588 Words / 3 PagesSubmitted: November 9, 2009 -
Krakatau (krakatoa)
Krakatau Krakatau (Krakatoa), is said to have created the worst volcanic eruptions in history, in 1883. Ancient Krakatoa formed in 416 A.D. and still exists today in Indonesia. That same explosion, in 1883, created 130 feet tsunamis, which destroyed 130 coastal homes, two docks (India and Australia), and killed about 36,000 people. It created very loud sounds and was heard as far away as Madasagascar, about 3,000 miles away from Java, where Krakatau was. Some
Rating:Essay Length: 459 Words / 2 PagesSubmitted: May 19, 2010 -
Krakatoa
One hundred twenty-two years ago, one of the most destructive powers of Nature was felt around the globe. This power was from the explosion of Krakatoa, an island volcano that lies in the Sunda Strait. The scientists of the time struggled to comprehend the destruction that resulted from this great explosion. The results from the examination of the destruction established a landmark in learning about volcanoes. But let us back up a bit and learn
Rating:Essay Length: 1,152 Words / 5 PagesSubmitted: November 17, 2009 -
Krebs Cycle
Several things occur in the Krebs cycle. It takes place in the mitochondrial matrix. The electron transport chain is located in the cristae of a mitochondria. The enzymes used during the Krebs cycle are found within the mitochondrial matrix excluding succinate dehydrogenase, which is bound to the inner mitochondrial membrane. Protein complexes located in the inner membrane perform the transfer and the gradual release of energy is used to pump protons into the intermembrane space
Rating:Essay Length: 537 Words / 3 PagesSubmitted: November 16, 2009 -
Krypton
Introducciуn Los bloques de construcciуn del universo se denominan elementos. De ellos esta compuesta la materia visible de los cosmos. Kriptуn es un elemento quнmico con el sнmbolo Kr y numero atуmico de 36. Ocurre en cantidades diminutas en la atmуsfera. Es un gas noble incoloro, inodoro e insнpido de muy pequeсa reactividad caracterizado por un espectro de lнneas verde y rojo-naranja muy brillantes. Es uno de los productos de la fisiуn nuclear del
Rating:Essay Length: 592 Words / 3 PagesSubmitted: May 2, 2010 -
Ksa-Program Policies
In my current position as a Public Health Analyst, I analyze and evaluate Drug Pricing Program (DPP) policies, goals, and objectives. I review and assess information from state and local health agencies, make determinations regarding eligibility for participation in the DPP, and determine whether criteria and/or procedures for identifying covered entities are effective in meeting program objectives. I am frequently called upon to brief my supervisor and other managers on unusual cases and issues. In
Rating:Essay Length: 1,018 Words / 5 PagesSubmitted: November 24, 2009 -
La Contaminación, Problemática Sin Fin
“La contaminación, una problemática sin fin” La contaminación será un tema de indiferencia, discordia y muchas otras cosas; ya que el ser humano realiza acciones las cuales repercuten cada día a la contaminación del planeta, y muy pocos ponemos de nuestra parte para solucionarlo; vivimos como si no nos importara lo que implica esto en un futuro y para próximas generaciones. Cuadros de ambientes saturados de humo, animales obligados a emigrar de su hábitat, los
Rating:Essay Length: 459 Words / 2 PagesSubmitted: March 26, 2016 -
La Science Politique Et Le Nйo-Institutionnalisme
La science politique et le nйo-institutionnalisme Sйminaire du 7-12-05 Introduction Dans ce texte, il s’agit dans un premier temps de prйsenter d’une faзon gйnйrale le nйo-institutionnalisme en tant que courant de pensйe afin de le situer plus ou moins dans son contexte d’apparition et notamment pour comprendre quel type d’approche il se propose d’кtre. Dans un deuxiиme temps, il sera question de discuter des trois courants qui le composent, c’est-а-dire : l’institutionnalisme du choix rationnel,
Rating:Essay Length: 2,360 Words / 10 PagesSubmitted: December 23, 2009 -
Lab
Intro In Lab #5 five we will be exploring the cycle of copper through many chemical reactions. What we are going to do is take a piece of copper metal put it through a series of reactions that change itЎ¦s state of matter and chemical formula, but in the end, we will return it to itЎ¦s normal solid state. The idea of this lab is to try to recover as close to 100% of
Rating:Essay Length: 619 Words / 3 PagesSubmitted: April 26, 2010 -
Lab 19a Investigating Chemical Equilibrium
Lab 19A: Investigating Chemical Equilibrium Purpose: To observe shifts in equilibrium concentrations when stresses such as temperature changes are applied through recognizing macroscopic properties of chemical systems and being able to explain the results using Le Chatelier's principle. Materials: Please see page 209 of the “Heath Lab Manual.” Note: Changes made to the materials/procedure include the optional use of microplates for parts 4 and 5, 250mL Erlenmeyer flasks for parts 1 and 2, 100mL graduated
Rating:Essay Length: 1,279 Words / 6 PagesSubmitted: December 17, 2017 -
Lab 2: Animal and Plant Cells
Lab 2: Animal and Plant Cells Purpose: To examine the differences between single cell and multi cell organisms in terms of Animal and Plant cells. Question: What are the differences between multi and single celled plant and animal organisms? Prediction: Spirogyra Cell: The parts of the spirogyra cell that will be visible under the microscope will be; cell wall, cell membrane, nucleus, chloroplasts, vacuole and cytoplasm. Banana Cell: The parts of the banana cell that
Rating:Essay Length: 1,079 Words / 5 PagesSubmitted: April 29, 2010 -
Lab on Matter
I. Introduction A. Purpose: the purpose of this experiment was to determine if the distance between matter effects the time it takes for the matter to reach thermal equilibrium. B. Hypothesis: If the distance between the matter is decreased then the time it takes for the matter to reach thermal equilibrium will decrease. C. Science concepts: Temperature- measure of the motion of molecules Thermal equilibrium- when two pieces of matter are the same temperature Kinetic
Rating:Essay Length: 478 Words / 2 PagesSubmitted: January 18, 2010 -
Lab on Solutions
I Introduction A. Purpose: The purpose of this experiment was to determine if the temperature of water effects the rate at which salt dissolves. B. Hypothesis: If the temperature of the water increases then the rate at which the salt dissolves will increase. C. Science Concepts: Solution- one substance dissolved in another Solute- the substance that gets dissolved Solvent- the substance that the solute gets dissolved in Characteristic property- a property that is unique to
Rating:Essay Length: 481 Words / 2 PagesSubmitted: March 25, 2010 -
Lab Procedure
Problem: What is the pH level of each of the liquids. Materials: Laptop, pH probe, Interface, bottle of clear liquid, bottle of white liquid, bottle of semi-cloudy liquid, paper towels, 2 small beakers. Procedure: Get a laptop. Take it to your area and open it up. Press and hold the power button until it makes a sound. Take the power wire for the Interface and plug it into the wall. Then plug the USB cable
Rating:Essay Length: 283 Words / 2 PagesSubmitted: January 26, 2010 -
Lab Report
For along time I sat and thought Scrimmaging for something to say Some words that would hold a meaning To each of us on graduation day I thought of the broken promises The facts That no one could ever seem to uphold And alas I stumbled upon my speech There is nothing left but the truth to be told These past four years, we have seen our share Of sorrow, and loss and pain Schedule
Rating:Essay Length: 354 Words / 2 PagesSubmitted: January 20, 2010 -
Lab Report
Observations for Step 1 In step one of the experiment, we synthesized 1-Bromoalkane from 3-metyl-1butanol and 1-pentanol using SN2 reaction. We started our experiment by collecting all the necessary glassware for the experiment. We were divided into groups each of us having two separate apparatus using the two different alcohols. We then added the HBr, our alcohol and sulfuric acid to the round bottom flasks and began heating to a boiling using a low setting
Rating:Essay Length: 366 Words / 2 PagesSubmitted: February 10, 2010 -
Lab Report
Purpose In this experiment, we were trying to find the relationship between the amount of force and acceleration of an object. We used Force, Acceleration, Distance, and Weight to find these figures. Procedure The procedure involved setting up the pulley for the weights, and adding weights to increase the amount of force on the other end. We recorded distance and time o find the acceleration of the mass, and then compared this figure to
Rating:Essay Length: 289 Words / 2 PagesSubmitted: June 9, 2010 -
Lab Report - the Type of Metal a Coin Is Made
Rose Rogers Period 6 9/12/15 Lab Report Objectives and Introduction: The objectives of this lab was to find out the type of metal a coin is made out of by calculating its density and comparing the precision of a triple-beam and a digital electronic balance. The independent variables were the type of coin (pre-1982 and post-1982). The dependent variables were the densities of the two coins. Lastly, the control variables were the amount of pennies
Rating:Essay Length: 407 Words / 2 PagesSubmitted: November 14, 2015 -
Lab Report Friction
Hypothesis: For an increase in a normal force, there will be a corresponding increase in friction. Introduction: Force is usually connected with a push or pull exerted on an object. In this experiment, I am using a contact force, a force that exists from physical contact between two things. I am pulling the spring scale, which measure force in Newtons (kg x m/s2), and then the block is moving. Different masses (kg), or the measure
Rating:Essay Length: 679 Words / 3 PagesSubmitted: January 1, 2010 -
Lab Report on Ideal Gas Law
Ideal Gas Law Lab 1. Procedure: First, we used a balance to weigh the canister of gas, and recorded that mass as the original weight. Then, we filled a large bucket with water and recorded the temperature. We then filled a small test tube with water at the same temperature and poured that water into a graduated cylinder to measure the original volume of water in the tube. We then poured the water back into
Rating:Essay Length: 383 Words / 2 PagesSubmitted: January 18, 2010 -
Lab Report Projectile Motion
Physics Lab Report * Purpose To observe, analyze and compare the theoretical calculations data and actual measurements data of projectile motion. * Hypothesis The displacement value of theoretical calculation is higher than the actual measurement. Due to the air resistance and friction reduced the value of displacement. * Materials * A car board * A marble * Rulers * A Photogate (BeeSPIV) * Two Nelson Physics 12 Textbooks * An iPhone 6 * A card
Rating:Essay Length: 778 Words / 4 PagesSubmitted: March 22, 2015