Chemistry Essays

In Mr. Siemiesz’s chapter he explained about the National Security Consequences of U. S Oil Dependence and how it could be fixed and changed for the best interest of the country; Mr. Siemiesz outlined specific points or steps the country could take to make those …

Air pollution is contamination of the indoor or outdoor environment by any chemical, physical or biological agent that modifies the natural characteristics of the atmosphere. Household combustion devices, motor vehicles, industrial facilities and forest fires are common sources of air pollution. Pollutants of major public …

As industry developed and increased, as did the need for reliable and efficient fuels to power the new machinery developed. It did not take long before fossil fuels were discovered, with their innate ability to provide high amounts of energy at seemingly low costs. Fossil …

For some time in the modern world, and especially subsequent to the events of September 11th, there has been a wave of concern regarding chemistry and its potential destructive powers. There are many people who hold a fearful attitude towards the chemical industry and its …

Proteun characterization by electrophoresis Abstract The molecular weights of protein extracts were assessed by sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE). Two sets of four protein samples, standard bovine serum albumin (BSA), invertase, egg albumin, and casein, were prepared; one set containing ? -mercaptoethanol (BME) while …

Introduction to Environmental Toxicology A lecture by Dr Rick Leah (Long version of Notes prepared by Dr R T Leah, Biological Sciences, University of Liverpool but including material summarized and adapted from various locations on the www*) Aims The impact of toxic chemicals on wildlife …

Exam 1 Introduction to Anatomy  What is the definition of anatomy? What is the definition of physiology? What is homeostasis? What are the two ways in which homeostasis is maintained? What are the directional terms used to find things in the body? For example, what …

Weathering Process Physical Weathering Processes Freeze Thaw (Frost Shattering) Temperatures need to fluctuate above and below freezing. When the temperature drops below 0 degrees, water collected in rock cracks freezes and expands. When temperatures rise again the ice melts. Pressure created by expansion results in …

Rain is very important for life. All living things need water to live, even people. Rain brings us the water we need. But in many places in the world even where you live, rain has become a menace. Because of pollution in the air, acid …

Archaeologists use a variety of methods to date the materials that they find during their excavations. These methods are based on various principles and each method has its own advantages and drawbacks as well. This paper attempts to understand the basic principles behind four dating …

The predicted clime ensuing from a Nuclear War is termed Nuclear Winter. Scientists predict the explosion of atomic armories would ensue in colder conditions and decreased sunshine on Earth for old ages. This posting will be limited to explicating the general effects of a Nuclear …

Objective To image a sample of rhodamine-doped polystyrene etched with various shapes, using a Confocal Laser Scanning Microscope and to analyse the sample topography by 2D and 3D reconstruction of the sample image. Introduction This CLSM design combined the laser scanning method with the 3D …

Among the components exposed to heat load, piston of internal combustion engine is subject to maximum thermal stress. The large temperature gradient the piston will cause structural deformation deterioration of lubricant and increase the clearance between the cylinder liner and piston there by causing more …

In addition to that, access to carbon dioxide and water areessential. Even though microalgae can produce in the presence of saline water,fresh water is needed in a raceway pond system to compensate for the evaporativeloss depending on the wind velocity, air temperature, and humidity level …

I did not understand how to explain why temperature does not change during a phase change and am not entirely sure if I have accurately or thoroughly described 3. 2. 3 and 3. 2. 4. This is also the case for 3. 2. 12 Thermal …

Vivid Atmosphere: Tennis Slowly, I kneel down to tie my shoe for the fourth time this match. The sweat creeps down my face as if mocking me in saying that I should have taken the cardio sessions more seriously. At this point I was doing …

Enzyme Reaction Rates Under Different Conditions Introduction In this lab you will observe how the rate of a reaction is changed as certain factors are changed. You will observe how changing factors like temperature, pH, substrate concentration, and enzyme concentration changes the rate of an …

Introduction 1. Background: The analytical technique that I have chosen to give an in-depth analysis of is Mass Spectrometry (MS) This analytical technique is basically the study of ionised molecules in the gaseous phase; its main use is in the determination of the molecular weight …

This exam is designed to give you a small glimpse as to the format of the exams I write. The content of the exam has no direct correlation to the difficulty of the actual exam you will take. Use this exam as another problem set …

Oil Conservation Fortnight (OCF) – 4th – 19th January Petroleum or crude oil is a non-renewable energy source that means it is present in the limited amount. If the use of oil will continue with the careless nature it is going to exhaust definitely at …

Enzyme Inhibition Many drugs exert their action by inhibition of an enzyme activity in the body. If the activity of an enzyme is vital to the cell or organism, then inhibition may lead to death of the cell or organism. It is now possible to …

Causes of Global Warming There are many factors that contribute to causes of global warming nowadays. Through many years of investigation,scientist have discover that the prime factor are cause by the effect of greenhouse gases (GHGs) emitted by humans. Mankind have distribute carbon dioxide in …

Lead Acid Cell vs. Button Cell Lead acid cells were invented in 1859 by the French Physicist Gaston Plante, and are the oldest types of rechargeable batteries. These types of batteries typically weigh at 5kg, but can range from half a kilogram to over 30 …

Carbon monoxide is a colourles, odorless, toxic gas whose primary beginning indoor is the uncomplete burning of fossil fuels. Carbon Monoxide is the most toxic which restricts the flow of O to the encephalon, rendering the individual dead within proceedings. The chief purpose of this …

The manufacturing of photovoltaic cells is diverse in the photovoltaic power industry. Many participants have developed their own proprietary manufacturing processes to construct their own proprietary technology. Several technologies of manufacturing photovoltaic systems exist in the industry. These technologies arguably represent the past and future …

Rocks are classified to make it easier on people to identify them in the future. This can be done by a numerous amount of ways. Each rock type has their own specific ways, but there are two distinct characteristics that apply to all. These are …

Plastics are a crucial component of modern civilization, influencing sectors ranging from packaging to aerospace. Underneath the umbrella name “plastic” there are several polymer kinds, each with specific properties. The density of plastic is a crucial quality that is sometimes ignored but is still critically …

Streams or rivers are bodies of water that constantly travel from its source, which is usually a mountain or an underground source, towards an exit point into the sea. These bodies of water carry different kinds of materials. There are three kinds of loads that …

Nuclear Main articles: Nuclear explosion and Effects of nuclear explosions In addition to stellar nuclear explosions, a man-made nuclear weapon is a type of explosive weapon that derives its destructive force from nuclear fission or from a combination of fission and fusion. As a result, …

The C rhythm can be defined as the uninterrupted biological procedure through which the C is exchanged between the environment and the beings. It besides refers to the thermonuclear reactions which are brought about by karyon of a C -12 atom when it absorbs protons. …