Science Essays
4,476 Science Free Papers: 4,081 - 4,110
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The Synthesis of Triphenylmethanol Via a Grignard Reagent
The Synthesis of Triphenylmethanol via a Grignard Reagent In this experiment, the organometallic regent, phenyl magnesium bromide, a Grignard Reagent, was reacted with benzophenone and hydrolyzed to synthesize triphenylmethanol. The final product, triphenylmethanol, was weighed and the melting point and percent yield were determined. The limiting reagent in the reaction
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The System Unit
Shaylee Johnson (377) Mrs. Porter TBE 1700 May 22, 2007 The System Unit The System unit is a case that houses the electronic components of the computer used to process data. Although many systems units resemble a box, they are available in many shapes and sizes. The case of the
Rating:Essay Length: 347 Words / 2 Pages -
The Taiga
The Taiga The taiga is the far northern coniferous forest of Siberia and by extension of Eurasia and America, extending to the northern limit of trees. Its winters are long and freezing, but the summers are short and humid. The materials that I used were; cocoa bursts, plain white paper,
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The Theories of Ageing
Theories of ageing Introduction The fundamental biological problem which all theories of ageing are seeking to explain was stated very elegantly in 1957 by Williams when he wrote, "It is indeed remarkable that after a seemingly miraculous feat of morphogenesis, a complex metazoan should be unable to perform the much
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The Thermic Effect of Feeding Medium Chain Triglycerides
The Thermic Effect of Feeding Medium Chain Triglycerides Even during rest the human body is constantly metabolizing energy to maintain itself. The rate at which energy is expended by the body, expressed in calories per hour, or normalized to calories expended per kg body mass per hour, is known
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The Tropical Rainforests of the World
The Tropical Rainforests of the World In this term paper, I will explain the great importance of the tropical Rainforests around the world and discuss the effects of the tragedy of rainforest destruction and the effect that it is having on the earth. I will talk about the efforts
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The Troubled Future of Nuclear Energy
Staley Joshua R. Staley Dr. Richard J. Fellinger English 150 22 September 2016 The Troubled Future of Nuclear Energy On July 30, 1945, at a secret location in the deserts of New Mexico, a massive explosion, the largest in human history, rocketed through the desert sending awe and terror through
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The Twin Supergiants: Alpha and Beta Centauri
Hadar, also known as Beta Centauri, is the 10th brightest stars (11th as viewed from Earth). Hadar is a blue-white super giant in the constellation Centaurus (Cen). In about 4,000 years, the motion of Alpha Centauri, who's proper name is Rigel Kentaurus, will carry it close enough to Hadar that
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The Two Faces of Human Cloning
The Two Faces of Human Cloning "Human cloning is deeply troubling." That is what President of the United States of America, George Bush, has to say about the notion of cloning humans. President Bush strongly supports legislation banning all human cloning. I, myself, believe not all human cloning is favorable
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The Tyrant Lizard King
The Tyrant lizard king By looking at the title do you know what it is about? The Tyrant Lizard king is actually the nickname of a dinosaur you probably do know which is, Tyrannosaurus Rex. The T. Rex was about Forty feet long, about fifth teen to twenty feet tall.
Rating:Essay Length: 258 Words / 2 Pages -
The Uncertainties of Genetically Modified Foods
The Uncertainties of Genetically Modified Foods Naomi Lim Food is not what it used to be. With progress in various types of technology, especially in genetic engineering, farmers and scientists have changed the way in which food is grown and made, raising questions about these methods and their possible risks
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The Universe
Humans live on a small planet in a tiny part of a vast universe. "This part of the universe is called the solar system, and is dominated by a single brilliant star-the sun." (Skywatching 230) The solar system is the earth's neighbourhood and the planets Mercury, Venus, Mars, Jupiter, Saturn,
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The University of Batangas' Participation in Mangrove Rehabilitation
Mangroves are coastal trees or shrubs that have characteristic features that allow them to live in estuarine or saline conditions in marine waters. The most common mangroves in the Philippines are Rhizophora, Avicennia, Bruguiera, Sonneratia and Nypa. Mangroves have many known benefits: environmental, ecological, economic, and source of food products.
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The Us Missions to Mars
Three weeks after the failure of Mariner 3, Mariner 4 was successfully launched on November 28, 1964. For its time, Mariner 4 was an amazing piece of equipment. Its basic structure was an eight-sided magnesium framework with seven electronics compartments. Four solar panels were attached to the top or sunward
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The Use of a Bacterial Plasmid to Clone and Sequence a Human Gene
#1. a) The Use of a Bacterial Plasmid to Clone and Sequence a Human Gene The process begins with restriction endonucleases scanning and binding to double-stranded DNA at specific base-pair sequences, the recognition sites, in a predictable manner. The restriction sites are usually 4 to 8 base pairs long and
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The Use of Dns in Police Investigations
The use of ?DNA? in police investigations The issue whether DNA should be used in police investigations is widely debated in the community. It is an important issue because it brings to attention the moral and ethical implications of using DNA as an investigative tool. A variety of different options
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The Use of Genetically Modified Salmon
The Use of Genetically Modified Salmon Throughout history there has always been a need to produce large quantities of crops and livestock which contain the most desirable phenotype. Farmers select for these desirable traits on the most fundamental level employing techniques such as selective breeding and the use of fertilizers.
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The Use of Marijuana in the Treatment of Psychological Disorders
The Use of Marijuana in the Treatment of Psychological Disorders The use of marijuana as a medicinal treatment has been met with much controversy. Public opinion of marijuana use, whether recreational or medical is sharply divided. Some dismiss medical marijuana simply as a hoax to make it legal. Others
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The Vsepr Theory
THE VSEPR THEORY The VSEPR stands for ÐŽoValence Shell Electron Pair RepulsionÐŽ±, the theory is used for predicting the structure of molecules. The theory can be used in two main steps. First, the number of all bonding pairs and lone pairs is calculated, next, these pairs of electrons are rearranged
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The War on Science Waged by the Republican Party and Especially by the George Bush Administration
The War on Science Waged by the Republican Party And Especially by the George Bush Administration I was taught that science is for the quest of truth, or 'The Truth'. As humans' new quest has evolved to the industry (at least what media dictates it to be), many people
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The Wilson's Disease
The Wilson's Disease The Wilson's disease is a genetic disorder of the thirteenth chromosome. This disease is an inherited disease and it is mostly likely to be in all of the offspring if a parent had it. It is the unnecessary increase of copper in the liver and brain. This
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The World Is a Text
essay is a piece of writing, usually from an author's personal point of view. Essays are non-fiction but often subjective; while expository, they can also include narrative. Essays can be literary criticism, political manifestos, learned arguments, observations of daily life, recollections, and reflections of the author. The definition of an
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The World Today
Washington's ultimate prize of changing the leadership of Iraq may be tantalisingly close. But the only policies which are coordinated and focused are those of its present President Saddam Hussein. The international community is fragmented and the Iraqi opposition in disarray. Indeed, the tensions between those ranged against Saddam are
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The Writing Style of Hemingway
The Writing Style of Hemingway For Whom the Bell Tolls portrays the typical Hemingway characters and addresses the issues of machoism and womanizing. In this novel, as in many of his other works, Hemingway employs extensive use of what is known as the Hemingway Code. Numerous influences from various people
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The Zodiac Killer
The Zodiac Killer The Zodiac Killer case is a criminal case about a mass murder from 1968-1972. The Zodiac killer has 7 confirmed kills and claims to have killed 34 people during this time period. Victims include David Arthur Faraday and Betty lou Jensen killed with a 44m. Luger pistol
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Theories of Mass Extinction
Scientists have found the first evidence that a devastating meteor impact in the Middle East might have triggered the mysterious collapse of civilisations more than 4,000 years ago. Studies of satellite images of southern Iraq have revealed a two-mile-wide circular depression which scientists say bears all the hallmarks of an
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Theory of Automata
Problem_1: Page 115: #2; Describe an algorithm for a Turing machine which receives the integer n as input and proceeds to write the description of the n-th Turing machine from the standard enumeration on its tape. A={ 1,2,3,……….n} f(x) = Let’s take the example of input 14, it can be
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Theory of Darwin
Bill Law Intro. To Anthropology Prof. Salazar 4 February 2003 A Theory Evolves 1. Darwin was unable to explain the manner in which life, specifically the genetic makeup of a life form could change to allow natural selection to occur. The modern synthesis of genetics and the new evolutionary theory
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Theory of Nursing
Theory of Nursing Before making the critical decision to enroll in a nursing program it is important to seek out information on nursing as a vocation. The program at this school is rigorous and time consuming and, therefore, should not be ventured into lightly. In this paper I will go
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Ther Tijuana River Watershed
The Tijuana River Watershed Essential Question: What is the current state of the Tijuana river watershed and how are people being affected by it. The Tijuana River watershed is approximately 1750 square miles and stretches from the Laguna mountains in the U.S. to the sierra de Juarez mountains in Mexico.
Rating:Essay Length: 705 Words / 3 Pages