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Chemistry Essays

Result for Subject Chemistry:
1168 essays
Adulterants in Toxicology Specimens Chemistry Research Paper
10 pages (2900 words) , Download 2 , Research Paper
Free
The process of adding adulterants is termed adulteration. An adulterant is usually distinct from the permitted chemical samples, such as food additives. However, contamination is used if an unwanted substance is included by accident or negligence rather than intent (Weise). Basically, there are two classes of adulterants. 
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The Properties of Fireworks Explosions Chemistry Term Paper
4 pages (1258 words) , Download 2 , Term Paper
Free
Fireworks are a group of pyrotechnic devices invented by the Chinese Sung dynasty. They have been used for public displays, personal entertainment, and religious purposes. They have also been used in agriculture to scare off birds. The composition is mainly of highly combustible and explosive compounds that combine to produce the effects of brilliant colors, sound, and smoke.
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Serum Markers for Septicemia Chemistry Research Paper
9 pages (2792 words) , Download 4 , Research Paper
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Rapid molecular-based tests have been developed to address this need but are not always accurate in this respect. The most commonly used biomarkers especially the serum markers are reviewed for their current uses and the diagnostic accuracies including the c reactive proteins and the PCT levels and also serum amyloid and others.
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Solubility Equilibriya Chemistry Essay
3 pages (750 words) , Download 4 , Essay
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There are two classes of organic compounds. This are organic or inorganic. This implies that all chemical compounds that are not organic can only be inorganic. There are various classes of inorganic compounds in different groups, with the major group being the ionic salts which has compounds like sodium chloride (NaCl) commonly known as the table salt.
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Compressed Hydrogen Production Chemistry Speech or Presentation
3 pages (798 words) , Download 4 , Speech or Presentation
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Ammonia.NH3 is recognized as one of the attractive hydrogens H2 carriers because it has a high hydrogen content of 18% mass, and it is easily liquefied under about 1 MPa of pressure at room temperature. NH3 can react with alkali metal hydrides and generate H2 even at room temperature, resulting in metal amides being formed as reaction products.
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Chemistry and Computer Science Chemistry Research Paper
3 pages (750 words) , Download 29 , Research Paper
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Moreover our cars and power generation units convert chemical energy in fuel to a more useable form. Chemistry has a deep relation to the computers and computer technology. The way we moved towards the more energy efficient electrical and electronic products depicts that generation after generation, the knowledge about the utilization of chemistry enhanced in huge amount.
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Improving Waste Management Strategies for Small Livestock Farms Chemistry Term Paper
3 pages (750 words) , Download 2 , Term Paper
It is of concern is the fact that these small farms do lack the potential to handle the amount of waste that emanate from their operations. This Trend if unchecked can lead adverse effects on the environmental health. Under the clean water act, the government requires individual to apply for a title in case they want they want to operate any of CAFOs to apply for a permit (Ciravolo p 255).
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A Qualitative Structure Activity Relationship Chemistry Essay
6 pages (1816 words) , Download 2 , Essay
Free
These steroid hormones studies on steroid hormones show that hormones have a certain degree of binding affinity to the corticosteroid-binding globulin (CBG) and gestagen receptors. The data reduction was performed based on principle component analysis (PCA). The loaded values are expected to give descriptive information about the descriptors.
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Materials Engineering Project Chemistry Research Paper
5 pages (1250 words) , Download 3 , Research Paper
As discussed in this paper, titanium alloy exhibits high degree of tensile strength, low weight, and high resistance to corrosion, thermal strength and ease of fabrication at extreme temperatures. However, titanium is highly susceptible to dry chlorine gas, hypochlorite and reducing acids thus limits its production and uses.
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Ketobemidone Analgetic Chemistry Research Paper
6 pages (1644 words) , Download 2 , Research Paper
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Ketobemidone has the ability to calm pains that do not respond effectively to other opioids. This property is attributed to NMDA, which originates from its component, metabolite norketobemidone. Ketobemidone remains a vital pain killer during surgeries and also quells severe pain caused by various ailments like cancer and fractures among others.
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FORENSIC CHEMISTRY: THIN LAYER CHROMATOGRAPHY (TLC) Chemistry Lab Report
5 pages (1250 words) , Download 2 , Lab Report
Introduction Thin-layer chromatography is a widely used analytical technique where the components of a sample are separated over a sorbent layer by the movement of an eluent by capillary action. The differences in migration and the attraction of the components to the eluent cause the separation on the TLC plate (Wall 2005).
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Biologicaly-active peptide Chemistry Essay
5 pages (1250 words) , Download 2 , Essay
Sharma, Singh and Rana (2011, pp.223-225) emphasize that biologically active peptides are proteins manufactured in the cell in the form of large proteins, which are then sliced and modifies to produce active products. The bioactive peptides play a major role in pathogenesis and psychological functions as signaling molecules.
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Air Quality and Health Chemistry Essay
5 pages (1250 words) , Download 2 , Essay
Babies, young offspring, elders and persons who have lung and heart problems are especially pretentious; however young, vigorous grown-ups are not resistant to damage from reduced air quality. Breathing of urban air contaminants have been related to a wide range of conflicting health consequences, comprising breathing and cardiovascular diseases, asthma exacerbation, abridged lung utility and early demise (U.S.
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Topics in Physical Chemistry Chemistry Essay
21 pages (5642 words) , Download 2 , Essay
It involves the changes of the position of electrons with regards to the formation or breaking of the bonds while the original elements always remain the same. Since there is no change in the original elements present, a chemical reaction can always be represented by an equation. Reagents or reactants are the initial substances that participate in a chemical reaction.
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Reactive Extrusion of TPE-E Nanocomposites Chemistry Case Study
4 pages (1462 words) , Download 2 , Case Study
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Chloroprene was earlier used for automobiles but it was replaced with TPEE because it has low durability. In addition, TPEE is widely used in Europe and North America because of its lightweight and its resistant properties to fatigue and chemicals. TPEE is produced through extrusion blowing at its melt state thus the resin must have good melt viscosity and tension.
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Electrochemistry Chemistry Assignment
3 pages (750 words) , Download 4 , Assignment
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No matter how the transformation or change is generated or produced, the voltage will be produced because of the transforming or changing magnetic field strength, moving a magnet away or towards the coil. 2. What is a galvanic cell and how does it work? Galvanic cells collect the electrical energy present from the electron transmission in a redox response or reaction to carry out an important electrical work.
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Chemistry of antiscalants Chemistry Essay
3 pages (750 words) , Download 2 , Essay
However, other chemicals can perform scale inhibition through significant intrication of calcium in the solution. These chemicals include diethylene triamine pentaacetic (DTPA), aminocarboxylates and ethylenediaminetetraacetic acid (EDTA). It is impossible to use these chemicals when the level of calcium is high since they need stoichiometric quantities of calcium ions and thus proves to be wasteful.
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The Use and Significance of Stable Isotopes in the Study of Forensic Medicine Chemistry Term Paper
16 pages (5960 words) , Download 2 , Term Paper
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Forensic scientists aim to identify the suspect and determine how and when a crime was committed. In relation to the differences between these two isotopes, this study will first discuss some basic information with regards to stable and radioactive isotopes followed by analyzing how these two isotopes can be used in the study of forensic science.
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Anode Materials in Li-Ion Batteries Chemistry Research Paper
7 pages (1830 words) , Download 2 , Research Paper
Free
An anode material not only enhances the productivity of batteries but also makes it less costly. To comprehend the logic behind the use of anode material it is important to first understand the properties of materials used while analyzing their specific purposes. Moreover, future development requires different ways of improving the anode materials which shall be discussed in this paper. 
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Reflections on Connection of Chemistry to Franciscan Values Chemistry Research Paper
5 pages (1250 words) , Download 2 , Research Paper
Without the necessary transformation, it would occur difficult for a Franciscan to realize the significance of other associated core values especially as they, in the similar manner, apply to the approach of refining student character and making one adequately capable of handling academic and professional tasks as in the scientific endeavour of exploring studies within the realm of chemistry.
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Ester Synthesis Chemistry Lab Report
3 pages (750 words) , Download 4 , Lab Report
Esters are categorized to have pleasant smells that are the core reasons for the pleasant fragrant in fruits and flowers. Examples of these esters are methyl butanoate which is mostly found in the liquids of pineapples and the famous isopentyl acetate which is found in the oil of bananas.
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Coal Chemical Looping Chemistry Research Paper
11 pages (3076 words) , Download 2 , Research Paper
Free
Basically, in addition to this observation, the rising threat to the environment which is posed by issues such as the rise in pollution and emissions of greenhouse gases in the atmosphere has made the invention of new technologies and investment in innovations a move that is pivotal for the future success.
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Reactivity of M-C Bonds and Catalytic Formation of Heterocycles Chemistry Essay
8 pages (2000 words) , Download 2 , Essay
Free
The processes of cyclometallation and catalytic cycles can be well established through the use of the AMLA process. This process refers to Ambiphilic Metal Ligand Activation and it is helpful during cyclometallation and catalytic cycles. The second key element is the CH activation process and this process usually helps in electrophilic metal and acetate activation. 
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Paraphrasing lab report Chemistry Essay
4 pages (1000 words) , Download 2 , Essay
The next procedure involved the purification of salicylic acid by recrystallization. The next involved the verification of the product to ensure that salicylic acid was produced instead of methyl salicylic. This was done by assessing the TLC and melting points of the product.
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Reactivity of M-C Bonds and Catalytic Formation of Heterocycles Chemistry Essay
12 pages (3397 words) , Download 2 , Essay
Free
Heterocyclics are thus the exact opposite of homocyclic compounds whose rings only contain atoms of one element. Despite the fact that heterocyclic compounds are likely to be inorganic, most of them have one carbon in their structures. The importance of heterocyclics in the synthesis of chemical compounds led to the emergence and spread of heterocyclic chemistry as a branch of the discipline.
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Lab Report - Precision and Accuracy Chemistry Lab Report
4 pages (1000 words) , Download 2 , Lab Report
Another possible source of differences in terms of precision is the possible time that elapsed in the pipetting of the solution for each trial. For one reason or another, the elapsed time may have caused slight evaporation in the liquid solution. Another thing is the possibility that the temperature of the transferred solution or the temperature of the laboratory slightly changed for every trial and so it may have slightly affected the rate of evaporation of the delivered liquid.
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Current Applications And Development Of Catalyst For The Synthesis Of Highly Functional Organic Carbonates Chemistry Essay
13 pages (3250 words) , Download 2 , Essay
Free
Current Applications and Development of Catalyst for the Synthesis of Highly Functional Organic Carbonates. Organic compounds obtained by carbonic acid and hydroxyl compound diesterification are called organic carbonates. These have diverse industrial, medical and biological applications as intermediates and solvents during lubricant, herbicide, pesticide, plastic synthesis, etc.
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Conns Syndrome Affects Mainly Younger Patients Chemistry Essay
3 pages (778 words) , Download 2 , Essay
Free
Conn’s Syndrome, which affects mainly younger patients, is largely asymptomatically or has very few symptoms present. The patient is only 30 years of age, so this gives added weight to Conn’s syndrome diagnosis. Patients often suffer from muscle weakness. Generalized muscle weakness must always be balanced with calcium levels in the body.
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Paraphrase a Reports and Solve Past Exams Papers Chemistry Coursework
4 pages (1205 words) , Download 2 , Coursework
Free
The stopper was inserted after swirling the mixture for 60 seconds. The pressure was released by inverting the funnel. The mixture was then shaken until a double layer was seen. The top layer was washed with 50ml of brine before adding sodium bicarbonate (50ml). The funnel was shaken gently until no effervescence was observed.
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Wittig reaction Chemistry Essay
6 pages (1500 words) , Download 2 , Essay
Free
Wittig Reaction Author’s Name: Course Name: Instructor’s Name: Date of Submission: Wittig Reaction is also known as the witting olefination, the witting reaction is a chemical test that examines the chemical reaction that occurs when the chemical components of aldehyde also known as ketone and triphenyl phoshonium are combined.
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Determination of Proteins Using Biuret and Lowry Assay Techniques Chemistry Essay
5 pages (1250 words) , Download 3 , Essay
Free
According to Senaratne, Park, and Kim (2006), it helps to properly understand the difference between qualitative and quantitative testing. Further, the researcher is able to use the spectrophotometer by calibrating it to determine the absorbance of different levels of solutions (Peterson 1983).
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Wastewater Pollution: Comparing Three Treatment Methods Chemistry Research Proposal
12 pages (3000 words) , Download 4 , Research Proposal
Free
Wastewater Pollution: Comparing Three Treatment Methods. Wastewater comes as a result of an industrial process that has added chemicals and biosolids that are harmful to human health and to the environment. Whole ecosystems have been destroyed because of the mishandling of wastewater in the past.
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A New Method for the Preparation of an Intermediate for the Synthesis of Mycolic Acids Chemistry Dissertation
21 pages (7916 words) , Download 2 , Dissertation
The alcohol then oxidized and chain extension. This pure intermediate will be used for the preparation of different mycolic acids. Notably, it is worth stating the above experiment can be conducted in different ways including the old method and the recently deduced method. Nonetheless, the products and the intermediary products remain the same. 
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Polymerization Chemistry Coursework
10 pages (2500 words) , Download 2 , Coursework
Free
The R-H group has the highest number of temperatures due to the bond that is exhibited between the hydrogen and carbon. For this reason the temperature required to break the bond and form an active site to attachment of the monomers it will require a lot of heat.
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Fossil fuel has no future: we need to develop renewable energy Chemistry Essay
6 pages (1500 words) , Download 2 , Essay
Free
A careful observation of the developments in the field of consumption of energy sources highlights a number of disadvantages of the excessive dependence on natural resources.
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Energy Changes Due to Acid-Base Reactions Chemistry Lab Report
8 pages (1982 words) , Download 2 , Lab Report
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The Results were obtained and tabulated in a table, which was later used in the calculations of the heat energy. The heat energy, which evolved as a result of the reaction, was calculated and the reaction enthalpies were compared for the four acid-base reactions. It is a common phenomenon whenever there is a chemical reaction.
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Supercapacitors applications , environmental issues and safety Chemistry Essay
5 pages (1250 words) , Download 2 , Essay
It is governed by the equations that govern conventional capacitors. The fundamental difference is between it and the conventional capacitor is that it has an extremely large surface area and extremely small insulator (dielectric). This way, it has more energy densities comparable to that of both conventional capacitor and batteries.
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ECOSYSTEM TOXIC THREAT RISK ASSESSMENT Chemistry Essay
5 pages (1250 words) , Download 2 , Essay
The impact of the motor vehicle exhaust emissions is widespread given that the uses of vehicles are many and varied with every industry using vehicles in one way or the other. While the majority of vehicles are personal vehicles that are owned by individuals, there are transport vehicles that serve the public in many ways (Barrow 56).
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Analysis of Mercury in Water Chemistry Research Paper
5 pages (1250 words) , Download 3 , Research Paper
In spite of its benefits, Mercury is also known to be a silent killer if ingested or during a long exposure of an organism to compounds containing Mercury (Mitra & Kebbekus p. 30-42). In this paper we will discuss in brief the various methods used to analyse Mercury as well as new potential methods in the same.
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The Spectrochemical Series Chemistry Lab Report
4 pages (1000 words) , Download 2 , Lab Report
This was done to determine the identity of each of these five cobalt complexes. Procedure Week 1 Complex B assigned by the instructor was prepared as follows: First 20ml acetone bottle was obtained then paced on ice water bath. Approximately 5 g cobalt salt was dissolved in distilled water (7 ml),this resulted to the formation of a purple solution.
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Enzyme Amylase Lab Report Chemistry Lab Report
5 pages (1250 words) , Download 2 , Lab Report
It proved that high enzyme concentrations and optimum pH levels and temperatures increased enzyme activity. Introduction: Amylase is an enzyme that helps in breaking down starch to form sugars such as maltose and glucose. In human beings it is found in the saliva.
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Chemical Vapor Deposition - Principles and Implementation Chemistry Research Paper
7 pages (2096 words) , Download 3 , Research Paper
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Gases are allowed into a reaction chamber which is set to optimum level conditions to allow the reaction of the gases to take place. Various adjustments on the reaction chamber produce four types of CVD: Atmospheric Pressure CVD (APCVD); Low-Pressure CVD (LPCVD); Plasma enhanced CVD (PECVD) and Metalorganic CVD (MOCVD).
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An Enzyme Controlled Reaction-Catalase Chemistry Essay
4 pages (1000 words) , Download 3 , Essay
Free
The author provides an experiment, which has 1 independent variable, 1 dependent variable and 1 control variable. The independent variable is the various concentrations of hydrogen peroxide, while the dependent variable is the rate of reaction in terms of oxygen production. The control variable is the temperature of the room and standard pressure.
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Experiment on Factors Affecting Enzyme Amylase Activity Chemistry Lab Report
7 pages (1835 words) , Download 5 , Lab Report
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The enzyme amylase was used. It was responsible for starch hydrolysis. A sample of starch was hydrolyzed in the presence of amylase, to shorter polysaccharides, glucose, maltose, and dextrins. The extent of hydrolysis was based on the time of reaction. The product is glucose if starch was completely hydrolyzed.
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Clinical Chemistry Assignment: Case study and data interpretation Chemistry Assignment
3 pages (750 words) , Download 2 , Assignment
The difference is the amount of measure used to quantify the amount of solutes in plasma. One litre of plasma osmolality is equivalent to 1 kilogram of plasma osmolarity. Osmolality in blood tend to increase with the body loss of water. For a normal person the antidiuretic hormone will be under stimulation if there is increased rate of osmolality.
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CFC's and Ozone depletion Chemistry Essay
3 pages (750 words) , Download 2 , Essay
However, the main reason behind ozone depletion is the presence of chemical compounds called chlorofluorocarbons (also known as CFCs) in the atmosphere. The reduction of the ozone layer has been causing various adverse effects on human health, ecology, and the environment.
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Pearson's hard soft acid base theory in bioinorganic Chemistry Term Paper
4 pages (1000 words) , Download 2 , Term Paper
Soft elements and ligands are highly polarizable and have small charge states. Hard elements and ligands are weakly polarized and have higher charge states (Jolly). Borderline elements and ligands have polarizabilities and charge states that are intermediate to hard and soft elements and ligands.
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The importance of Hydrogen Bonding in Biology Chemistry Essay
4 pages (1000 words) , Download 2 , Essay
This bond forms when a hydrogen atom binds to a strong electronegative atom of one molecule at the same time it covalently attaches to another electronegative atom in a different molecule (Chang, 2008). The electronegative atoms that form this kind of bond with hydrogen include oxygen, fluorine and nitrogen.
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RECOVERY OF PLATINUM GROUP METALS (PGMs) FROM SCRAPPED FUEL CELLS Chemistry Research Paper
4 pages (1000 words) , Download 2 , Research Paper
Nearly 2/3 of the oil American consumes on a daily basis is for transportation only. Consuming oil and other fossils fuels for energy produces pollutants. Emission concerns have been in the limelight a lot presently. Therefore, it is in the best awareness for everybody to find an option too combusting fossil fuels for energy production.
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HUMAN TOXIC THREAT RISK ASSESSMENT Chemistry Essay
5 pages (1250 words) , Download 2 , Essay
An example given by ATSDR is diacetyl which is used to flavor butter and causes constrictive bronchitis. The Centers for Disease Control & Prevention (CDC) also backs up this with evidence that diacetyl and other food additives have adverse health effects (Barrow 77).
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