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Free research essays on topics related to: molecule

104 results found, view free essays on page:

  • Organic Chemistry Anti Inflammatory
    2,348 words
    What would you think if I gave you a drug and said this is going to help you but I want you to know ahead of time that 50 % of the dose is not affected, in fact the drug is 50 % not pure. The idea of that would make you feel you want another drug. The reality of that is that a large # of drugs we give are 50 % impure and the reason is b / c so many drugs we give are racemic mixtures, a 50: 50 mixture of enantiomer's. Most drugs that demonstrate optical activity only one isomer is pharma logicall...
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  • Nail Polish Sulfuric Acid
    677 words
    AIM To prepare and purify an ester. &# 61656; concentrated sulphuric acid &# 61656; sample of nail polish (for smell comparison) &# 61656; separating funnel and stopper &# 61656; 1 mol L- 1 sodium carbonate solution After carefully assembling the apparatus and given a safety approval by the teacher, I carefully added the ethanol and glacial acetic acid into the pear shaped flask. A few marble chips were added to avoid the larger reactive bursts of the mixture during refluxing that were predicted...
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  • Oxygen And Carbon Dioxide Oxygen And Carbon Blood
    374 words
    Respiratory gases-oxygen and carbon dioxide moves between air and blood in the lungs. The structure of the human lung provides immense internal surface that facilitates gas exchange between the alveoli and the blood in the pulmonary capillaries. Respiratory gases move between the environment and the respiring tissues by two principal mechanisms, convention and diffusion. Convention is responsible for movement of air from the environment into the lungs and also for the movement of the blood betwe...
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  • Valence Electrons Carbon Dioxide
    328 words
    For my report, I choose to design a ball and stick model for a carbon dioxide molecule. I used the C as the center and an O on each side of the C. For Christmas purposes I colored the C green and the two Os red. To make the letters, I used white out. The sticks that connect the balls are actually cue tips that I have taken the cotton off of. I used glue to make it stick on better and just punched in the stick. The sticks are suppose to be springs and I tried bendable straws that were cut, but th...
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  • Ozone Depletion Ozone Layer
    1,344 words
    The Earths ozone layer shields all life on the planet from the suns harmful radiation and is extremely important to all life on the planet, but we as a human race are now faced with a very important question. This question is, Is the Earths ozone layer really depleting, and if it is, is it really a threat? There is evidence that less protection from ultraviolet rays will, over time, lead to increased amounts skin cancer, cataract, and even crop damage. With cooperation with over 140 oth countrie...
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  • Three And Four Reaction Rate
    859 words
    Title: Examining Some Properties of the Enzyme -amylase In this experiment a deeper meaning in the catalysts of reactions is studied. Catalysts accelerate chemical reactions without permanently changing the reaction. Enzymes, catalysts in biochemical reactions, are globular proteins which lower the activation energy needed to begin a reaction and therefore increase the rate at which efficient reactions can occur. Proteins (henceforth enzymes) are complex molecules made of amino acids in polypept...
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  • Double Helix X Ray
    784 words
    Born on July 25, 1920 in London, England, Rosalind Elise Franklin was a catalyst to many other scientists in the field of genetics. Using coal and carbon as subjects, Franklin discovered the double helix of DNA, the shape that two linear strands of DNA assume when bonded together. In 1945, Franklin received her Ph. D in physical chemistry from Cambridge University. The next year she went to Paris and worked in the Laboratoire Central des Services Chimiques de Left until 1950 where she concentrat...
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  • Mcgraw Hill Book Hill Book Company
    1,599 words
    Chemistry has been called the science of what things are. Its intent is the exploration of the nature of the materials that fabricate our physical environment, why they hold the different properties that depict them, how their atomic structure may be fathomed, and how they may be manipulated and changed. Although organic reactions have been conducted by man since the discovery of fire, the science of Organic chemistry did not develop until the turn of the eighteenth century, mainly in France at ...
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  • Cup Of Coffee Coffee Shops
    1,564 words
    "I think I just saw Jesus in my cup of Taster's Choice" -Zippy the Pinhead I sit on the bench outside "Caf Kilim" a popular coffee shop in downtown Portsmouth. Friends and buddies walk in and I ask how's it going. They nod and come back out two minutes later with a cup of coffee in their hand. More people show up and go in and out each with a cup of joe in their hand. What is this drive to bring us here? Why has the coffee house become a social headquarters? What is this Coffee Culture and what ...
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  • Dust Particles Blue Light
    1,256 words
    Exploration of a Natural Colour Phenomenon Why does the sky colour change? To answer this question, one should be aware of the Earth's atmosphere, and light. What is the atmosphere? The sky is filled with air which is a mixture of tiny gas molecules and small bits of solid stuff, like dust (Why Is the Sky Blue? ). The air constitutes the atmosphere, a gaseous shell surrounding the Earth and some other planets. The main gaseous components of the atmosphere are nitrogen (78. 09 %) and oxygen (20. ...
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  • Year Old Man Back To Life
    2,020 words
    Cell Components Let's imagine clouds of cold fog billow up through a circular hatch in the top of a stainless steel tank as a biologist pulls out the lid and its one-foot thickness of styrofoam insulation. As the fog rolls down to the floor, Hay peers into the dark tank, where the temperature is all the time 321 degrees below zero Fahrenheit. It is kept so cold because that is a temperature at which life, normally warm and pulsing with activity, abandons its vital dance and enters limbo - but wi...
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  • Hydrogen And Oxygen Simple Sugars
    329 words
    Carbohydrate Structure and Function Carbohydrates are molecules composed of carbon, hydrogen, and oxygen. They are polymers of the basic units called monosaccharides. Dissaccharides are compound sugars, composed of two monosaccharides, (simple sugars) bonded together. Molecular Structure For example, two molecules of glucose can bond together to form the Disaccharide Maltose. Sucrose and Lactose are other common Disaccharides. Dissaccharides are formed through condensation reactions that result ...
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  • Degrees Celsius Mothers Womb
    2,134 words
    As we enter a new millennium we are also making vast technological improvements. In the field of medicine in particular, there is cause for great optimism. There has never been more power to restore, maintain and extend health. However there is something even bigger approaching, cryonics. Many people think of cryonics as some futuristic, science fiction process that would only be possible in the movies. However the idea of cryonics isn t really that unreal. There are many groups and scientists w...
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  • Living Things Thomas Aquinas
    974 words
    ? St. Thomas Aquinas has written several important works. Some of them are: The Disputed Questions on the Power of God, Exposition of Dionysius on the Divine Names and Disputed Questions on Spiritual Creatures. Most of Aquinass works have been written to try to prove the existence of God. Aquinas has been a firm believer that everything had to have a creator andthe only possible solution would be something called God. It is with this idea that Aquinas Third Way was written. In his De aeternitate...
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  • Earth Surface Theory Is Based
    1,417 words
    According to the Bible, God created the first man, Adam, from the soil and the first woman, Eve, from Adam? s rib. These events happened in the Garden of Eden almost six thousand years ago. That is one of the many beliefs of how carbon based life forms, otherwise referred to as living organisms, came to exist on Earth. Since the beginning of man? s reign on earth he has tried to explain his origins. He has used various religions and myths of being created by some higher power and he has looked t...
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  • Lean Body Mass Creatine Monohydrate
    2,355 words
    /Food Athletic Enhancer In this research paper I will be discussing the ever-popular athletic supplements: Creatine, Androstenedione, and HMB. It has been proven that these supplements when taken in the proper doses will produce phenomenal results in athletic performance. They are taken by athletes of all fields of play in order too give them that extra edge over competition. Creatine monohydrate, which is the number one supplement preferred by athletes, is not a mineral, herb, or steroid. Creat...
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  • Circle Of Life Genetic Engineering
    1,570 words
    Genetic engineering, the transfer of genetic material from one organism to another, is often a hot topic of debate among scientists and the general public alike; yet, what is the controversy behind this ground breaking medical procedure? Although the procedure, in its numerous forms, could greatly benefit society in many ways, the ethics of the whole idea have many concerned. Types of Genetic Engineering There are several types of genetic engineering and they all vary slightly in the technique a...
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  • Temporal Lobes Frontal Lobe
    1,121 words
    Background Huntingtons Huntingtons Disease Huntington's Disease Background Huntington's disease is inherited as an autosomal dominant disease that gives rise to progressive, elective (localized) neural cell death associated with choleric movements (uncontrollable movements of the arms, legs, and face) and dementia. It is one of the more common inherited brain disorders. About 25, 000 Americans have it and another 60, 000 or so will carry the defective gene and will develop the disorder as they a...
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  • H 2 O Mass Spectrometer
    531 words
    AMass Spectrometer Mass Spectrometer A mass spectrometer produces charged particles (ions) from the chemical substances that are to be analyzed. The mass spectrometer then uses electric and magnetic fields to measure the mass (weight) of the charged particles. There are many different kinds of mass spectrometers, but all use magnetic and / or electric fields to exert forces on the charged particles produced from the chemicals to be analyzed. A basic mass spectrometer consists of three parts: 1. ...
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  • Carbon Dioxide Amino Acid
    1,205 words
    Nanotechnology as a Medicine As modern science learns more and more about the human body and the functions of its various systems, material science is delving into the molecular level. The marriage of these two fields is considered to be nanotechnology. Today s science is working on the design and synthesis of a wide range of nanostructures, with specified geometry and surface characteristics, in hopes of unlocking all the potential uses of nanotechnology. For example, tailored nanomaterials cou...
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