StudentShare
Our website is a unique platform where students can share their papers in a matter of giving an example of the work to be done. If you find papers matching your topic, you may use them only as an example of work. This is 100% legal. You may not submit downloaded papers as your own, that is cheating. Also you should remember, that this work was alredy submitted once by a student who originally wrote it.
Contact Us
Sign In / Sign Up for FREE
Sign Up for FREE Sign In
Search
✕
Go to advanced search...
✕
Home
Free Samples
Premium Essays
Editing Services
Editing Proofreading Rewriting
Extra Tools
Essay Topic Generator Thesis Generator Citation Generator GPA Calculator Study Guides Donate Paper
Essay Writing Help
About Us
About Us Testimonials FAQ

Chemistry Essays

Result for Subject Chemistry:
1169 essays
Petroleum extraction process Chemistry Term Paper
4 pages (1000 words) , Download 3 , Term Paper
As oil is non-renewable resource, this branch needs to develop technologies aimed on rational exploitation of oilfields and decreasing of loses and waste
Preview sample
The Solvay Process for Sodium Carbonate Chemistry Research Paper
5 pages (1476 words) , Download 4 , Research Paper
Free
The final important part of the reaction normally involves the decomposition of sodium bicarbonate NaHCO3 through heating at high temperatures (calcination) whereby sodium bicarbonate NaHCO3 precipitates and converts to sodium carbonate (Na2CO3) while both carbon dioxide (CO2) and water (H2O) are liberated as gases. 
Preview sample
sponsored ads
Hire a pro to write
a paper under your requirements!
Win a special DISCOUNT!
Put in your e-mail and click the button with your lucky finger
Your email
YOUR PRIZE:
—
Apply my DISCOUNT
Method of chemical strengthening Chemistry Coursework
3 pages (1000 words) , Download 2 , Coursework
The author of the paper states that another method of strengthening is called chemical strengthening. This is where the glass material is submerged into a potassium nitrate solution. The high-mass potassium molecule, which is bigger, then replaces the sodium molecule in the glass material.
Preview sample
Biotechnology Company Chemistry Essay
1 pages (250 words) , Download 2 , Essay
Free
Therefore, it rids the environment of methane, which is among the major gases that are significant for global warming via greenhouse effect (Khalil 34). The company’s name is yet to be determined. It is a relatively young company with a bright
Preview sample
Properties of gases( pressure, volume, temperature by Boyle's Law) Chemistry Research Paper
2 pages (500 words) , Download 3 , Research Paper
Free
The project revisits the study that was initiated by Robert Boyle in the year 1662. In the study, gas exhibited a unique characteristic that made it possible to make various studies regarding the gases. The compressibility of gases gave a
Preview sample
Hazardous Material Management and Hazard Communication - Exempted Chemicals Chemistry Essay
1 pages (272 words) , Download 2 , Essay
Free
CERCLA hazardous substances are found in the products that are regularly used. They are regulated and pose no threat to life, but if they find their way to the environment, they can pollute the land, water and air, hence creating a negative impact on the health of both human beings and animals. These substances include led batteries, petroleum.
Preview sample
The use of Isotopes in medicine Chemistry Essay
4 pages (1000 words) , Download 2 , Essay
The radiation from the isotopes destroys or weakens the targeted cells in the human body. Other isotopes are significant in the sterilization of the medical equipment and products. It is noteworthy that the utilization of
Preview sample
Adsorption/desorption of Chlorohexidine (CHX) on Flax and Cotton fibers Chemistry Essay
2 pages (500 words) , Download 2 , Essay
Free
This simply implies that less chlorhexidine was left in the solution with flax than in cotton due to the fact that flax has adsorbed more chlorhexidine than cotton. It appears that flax can adsorb almost twice the amount of chlorhexidine cotton can adsorb. This suggests that
Preview sample
Density experiment Chemistry Lab Report
2 pages (500 words) , Download 7 , Lab Report
Free
The results yielded a significant relationship between mass and volume at ‘0.05 level of significance’ and a corresponding p value of 0.0009. The results also identified an experimental density of 7.54 g/mL for the pennies
Preview sample
Ionic Equilibria Chemistry Lab Report
5 pages (1508 words) , Download 3 , Lab Report
Free
Since acids and bases readily react with each other, it is experimentally quite easy to find the amount of acid in a solution by determining how many moles of the base are required to neutralize it. This operation is called titration, and you should already be familiar with it from your work in the Laboratory. We can titrate an acid with a base, or a base with an acid.
Preview sample
Physical and Chemical Properties of Methylene Chloride Chemistry Essay
3 pages (750 words) , Download 2 , Essay
Methylene chloride is described as very hazardous substance in case of eye contact, ingestion, inhalation or skin contact. Personnel using this chemical should protect themselves from exposure by wearing laboratory coats, safety goggles, vapour respirators (approved/certified) and gloves. Exhaust ventilation and other engineering controls should be provided to keep the airborne concentrations of vapours below the threshold limit value (TLV). 
Preview sample
Environmental Chemical Compound Research Writing Assignment Chemistry Research Paper
2 pages (500 words) , Download 2 , Research Paper
Free
oride, dichloro-difluoromethane , chladone 12, dichlorodifluormethane, dichlor(difluor)methan, dichloro(difluoro)methane, Frigen R12 , khladon 12, Chlorofluorocarbon 12, Arcton 12, arcton 6, Fluorocarbon-12, electro-cf 12, Forane 12, eskimon 12, Fluorocarbon 12, Freon 12,
Preview sample
Energy Stabilization Wedges Chemistry Essay
3 pages (850 words) , Download 2 , Essay
Free
Energy-producing companies such as BP endorsed the energy wedge. The motor vehicle industry that actively engages in the production of a motor vehicle such as Ford also endorsed the program. The reason behind their support is that they wanted to be partners in the effort of finding solutions to the greenhouse problem, which causes global warming. 
Preview sample
INTRODUCTION MULTI-STEP SYNTHESIS LAB REPORT Chemistry Essay
1 pages (250 words) , Download 3 , Essay
Free
The synthesis of complex molecules several reaction sequences may be required to achieve a target molecule. The quality of each procedure and its efficacy in producing desired products are a major consideration in any process (MSU). The
Preview sample
How the scientific method is illustrated by the development of the atomic model Chemistry Essay
1 pages (250 words) , Download 2 , Essay
Free
Evidence to this assertion is depicted under stoichiometry reactions (McLean, 3). These reactions were able to prove that a combination of elements was able to maintain their proportion after reacting with each other.
Preview sample
War on Vitamins Chemistry Essay
1 pages (335 words) , Download 2 , Essay
Free
With the current situation of the state where supplements are freely roaming the stores and pharmacies, and some drugs are easily bought over the counter, their move to regulate them may cause these products to be out of the market. This can hurt the public, especially those who are relying on affordable ways to get treatment for their sickness.
Preview sample
High-Performance Liquid Chromatography Chemistry Assignment
3 pages (1437 words) , Download 2 , Assignment
Benzo-pyrene is polycyclic aromatic hydrocarbons with complex mixtures produced through incomplete combustion (US EPA, 2011). They appear as pale yellow crystals which do not dissolve in water. (SEPA, n.d). They are commonly found in cigarettes, foods that are grilled and broiled. They are also products of industrial processes (EPA, 2006).
Preview sample
Explaining the Factors That Affect the Rate of Reaction Chemistry Assignment
6 pages (1738 words) , Download 3 , Assignment
Free
Lowering the pressure to around 250-350 atmospheres and raising the temperature to between 400-500°C while passing the gases over four catalyst beds was found to overcome the problem of containing the gases at very high pressure. Each pass over one catalyst bed leads to the conversion of around 15% of the mixture.
Preview sample
Article Review Chemistry Book Report/Review
2 pages (500 words) , Download 2 , Book Report/Review
Free
Lead is known to be a health hazard for all humans. And it cannot be seen or smelled neither can it be tasted. Human beings are surrounded by lead within the environment, but this does not implicate that
Preview sample
Chemistry (Metallic glasses) Chemistry Term Paper
2 pages (500 words) , Download 2 , Term Paper
Free
The suppression of the transformation of the super cooled liquid to crystalline phase due to the addition of novel alloy components alloys for
Preview sample
John Daltons Atomic Theory Chemistry Essay
3 pages (1135 words) , Download 2 , Essay
Free
John at age 27 was appointed to teach mathematics and natural philosophy at the New College where he taught for 7 years (Emery, 1988). This essay will explain the Chemistry background of the Atomic Theory as put forward by John Dalton, as well as how the theory affected subsequent studies into the nature of the atom.
Preview sample
Hazardous Properties of Chemical Substances Chemistry Essay
1 pages (323 words) , Download 2 , Essay
Free
Halogenated organic compounds may build up in the environment and establish in food chains thus, causing health problems and adverse ecological impacts. When polymeric materials are retarded by fire, the EH & s or an FS professional and the entire living population become more exposed health hazards connected with these compounds.
Preview sample
Cystic Fibrosis and Genetic Mutation Chemistry Essay
1 pages (306 words) , Download 4 , Essay
Free
The protein called the cystic fibrosis transmembrane conductance regulator (CFTR) influences the transport of chloride and the abnormality is found in the DNA of the related cells. The AF508 mutation that is what it is called as deletes three nucleotides or DNA building blocks from the gene.
Preview sample
Devil Facial Tumor Disease Chemistry Essay
4 pages (1000 words) , Download 2 , Essay
Free
According to the report DFTD is a devastating cancerous sarcoma that has an effect on 30 to 50 percent of Tasmanian devils. The advancement of ulcerated tumors all around the head and jaws of the animal is found to be the characteristics of disease. These extend into malignant tumors that disperse from the face of animal to the whole body.
Preview sample
The Electronic Structure of Atoms Chemistry Assignment
2 pages (500 words) , Download 2 , Assignment
Free
Spin quantum number ‘ms’ is related to spin of the electron that can be either clockwise or anticlockwise. Its value is +1/2 or -1/2 (Quantum Numbers and Electron Configurations, 2014). Aufbau is a German word that means
Preview sample
Viscosity and polymers Chemistry Lab Report
1 pages (250 words) , Download 2 , Lab Report
Free
For weak intermolecular forces, as in toluene and Xylene mixture remains constant, i.e. equal to the viscosity of the individual liquids. Viscosity is inversely proportional to the intermolecular forces in a solution. Viscosity of water is
Preview sample
Molds and Volatile Organic Chemicals as Indoor Air Pollution Chemistry Research Paper
5 pages (1422 words) , Download 2 , Research Paper
Free
In general, there is a genuine risk of indoor air pollution, which can cause a serious health hazard. The presence of Molds and Volatile Organic Chemicals are certainly a threat to our health as the first causality can be our lungs and respiratory system, which get effected by inhaling of such compounds.
Preview sample
Exploring polymerization reactions Chemistry Lab Report
2 pages (500 words) , Download 2 , Lab Report
Free
Therefore, the next step would be to analyze some of the chemical properties of styrene. Polystyrene is brittle, less viscous and leaves a dry film. These properties allow us to conclude that polystyrene is formed. The mixture becomes thicker (viscous) while
Preview sample
Element that undergoes radioactive decay Chemistry Article
1 pages (250 words) , Download 2 , Article
Free
e radioactive tracer is absorbed by the muscle of the heart in proportional direction to blood flow, then to the muscle area, during rest and in the post stress. The variation in myocardial absorption of technetium after and before stress identifies heart muscle areas that are
Preview sample
1 Day Diet Diary Chemistry Essay
5 pages (1302 words) , Download 2 , Essay
Free
The decision for choosing this day for carrying out this activity was based on the fact that this served well to illustrate my typical day. Much consideration was taken to ensure that no external factors came in hand to distort the recording of the quantities. The recording of the foods eaten was done immediately after eating and some were done just before eating.
Preview sample
The Synthesis of Sulfanilamide Chemistry Lab Report
4 pages (1000 words) , Download 4 , Lab Report
Most of these drugs are antibiotics and they act by inhibiting folic acid biosynthesis. The general structure of sulfa drugs is as indicated in the graphic below. The use of the drug is based on the concept of metabolic antagonism. Sulfa drugs
Preview sample
The Process of Biochemistry Chemistry Case Study
2 pages (500 words) , Download 3 , Case Study
Free
Pyruvate is the end product of this process when energy is sufficient but during the time of hypoxia, this pyruvate goes into the lactic acid cycle. It is the conversion of pyruvate into lactate to produce an extra amount of energy which is 2 molecules of ATP. The enzyme involved in this process is called lactate dehydrogenase.
Preview sample
Tracking Acrylamide Source from Polyacrylamide Gel Chemistry Research Proposal
6 pages (2459 words) , Download 3 , Research Proposal
Free
Contamination of soil and water by acrylamide released from polyacrylamide degradation from hydraulic fracturing as friction agent is seen to be a major concern. In this case, carbon stable isotope ratios will be used in tracing the deposition as well as the transportation of this acrylamide release from the unknown source.
Preview sample
Chromatographic Separation of Amino Acids, pH Profile of Amino Acids Chemistry Lab Report
20 pages (5409 words) , Download 2 , Lab Report
Free
One molecule of the enzyme can ‘attack’ a number of linkages on different glucose chains. The activity and stability of amylase depend on calcium and chloride ions. It has a molecular weight of 55 KD (Jacobsen, Melvaer, and Hensten-Pettersenm 1972). Salivary amylases have an optimum temperature, pH etc at which they show maximum activities.
Preview sample
Measuring The Heat of Decomposition of Hydrogen Peroxide Chemistry Lab Report
5 pages (1250 words) , Download 2 , Lab Report
By measuring how the temperature changes when H­2O2 and a catalyst are mixed, it is possible to determine the enthalpy of decomposition H­2O2. This experiment will determine the enthalpy of decomposition of H­2O2 ­when it is mixed with potassium
Preview sample
Relative Rates of Nucleophilic Substitution Reactions Chemistry Lab Report
2 pages (500 words) , Download 5 , Lab Report
Free
the effects of the nature of the leaving group, the size of the nucleophile as well as the polarity of the solvent on the rate of SN1 and SN2 reactions. Primary, secondary and tertiary alkyl bromides were reacted with NaI in presence of acetone and ethanol solvents to determine
Preview sample
Acid-Base Equilibria Chemistry Lab Report
1 pages (250 words) , Download 4 , Lab Report
Free
and vinegar was placed under burette. NaOH from the burette was slowly added to the flask, as the flask was being swirled until the solution in the flask was a faint permanent pink. The final volume for NaOH was recorded on the data sheet. At equivalence point, enough base
Preview sample
Protective equipment Chemistry Essay
4 pages (1000 words) , Download 3 , Essay
d). This reactive property of chemicals is employed in a wide range of industries such as food production, material production, pharmaceutical, and others. Conventionally, many such industries do not always categorize the unique behaviour of
Preview sample
Portable X-Ray Fluorescence Chemistry Research Paper
7 pages (2073 words) , Download 2 , Research Paper
Free
The outcome of the experiment highlights advantages and limitations to each technique and instrument applied during the lab exercise. In which case, three experiments were set up to explore the concept of XRF. For the first experiment, there is an analysis of gold in plating solutions in the presence of several additive ions by portable X-ray fluorescence (XRF).
Preview sample
Regulation on Registration, Evaluation, Authorization and Restriction of Chemicals Chemistry Essay
7 pages (2025 words) , Download 2 , Essay
Free
Its creation purpose was to safeguard human health. The activities of these organizations directly influence the economy of countries in the European Union. In turn, their decisions have alignment with the political structure of several states within the European Union. Globally, their requirements are among the strictest regulation measures that directly affect trade within the European market.
Preview sample
Dangers of Genetically Altered Foods Chemistry Essay
2 pages (500 words) , Download 2 , Essay
Free
cottish researcher at the Rowett Research Institute located in Aberdeen, the processes of altering the genetics of food causes damage to a mammal’s digestive and immune systems. In his studies, the researcher discovered that when rats were fed with transgenic potatoes they
Preview sample
Stereo Electronic Effects in Fuel Dehydrating Icing Inhibitors Chemistry Research Paper
11 pages (2750 words) , Download 2 , Research Paper
Free
Although the water component is normally at low concentrations (< 0.2%) and can easily be vaporized, free water is a major contaminant that can potentially cause serious damage to jet engines (Taylor, 2008, p.2401). The icing on the critical components of the jet fuel system is particularly attributed to the fact that solubility normally decreases with decreasing temperatures.
Preview sample
Basis of Setting the Limits of the Hazardous Chemicals Chemistry Essay
1 pages (365 words) , Download 2 , Essay
Free
Acute exposure is normally limited to a duration that is less than 24 hours and entails single or recurrent exposure in the period. Sub-acute exposure entails frequent exposure that might last for a single month whilst sub-chronic exposure entails a period that ranges from one month to corresponding three months. These exposure limits are normally applicable to exposure by inhalation and skin exposure.
Preview sample
Paraphrasing Paragraph about Phosphene and Alkynyl Ligand Chemistry Assignment
1 pages (250 words) , Download 2 , Assignment
Free
Like alkyl groups, alkynyl, alkenyl and aryl groups can bond to a metal form through a single carbon atom. For this property, these groups are described as “monohapto’. However, there is a possibility of each of these three groups accepting “pai” electron density into anti-bonding orbitals, although the same has not been observed, largely, so far. 
Preview sample
Chemical Principles Chemistry Assignment
5 pages (1250 words) , Download 2 , Assignment
Since there are a total of 28 electrons, half of them has a value of -½ and half of them has a value of +½. Therefore there are 14 electrons having a value of +½ ms A5 For each of the following molecules, give the hybridization of the central atom
Preview sample
Chemistery Chemistry Essay
3 pages (750 words) , Download 2 , Essay
Identify the sXRORROArOHR1RRR1R2OHR1R2R4R3ORRROOROROHR2R1R–X + –C≡NR–C≡NR–X + –C≡C–RR–C≡C–Rynthons A, B and C (in the form (R1)+/(R2)–). (iii) Another reagent is required for the reaction of D
Preview sample
Water: An Overlooked Essential Nutrient Chemistry Assignment
2 pages (694 words) , Download 5 , Assignment
Free
Water is the only substance that can be taken by both active and inactive persons, it is one of the few things needed by the body as the body cannot do without, Gatorade and Powerade are not as essential as water is to the body water is the best choice to invest in as it is timeless and will always be a basic need required by the human body.    
Preview sample
Organic Chemistry Lab: Isolation of Caffeine from a Tea Bag Chemistry Lab Report
6 pages (1871 words) , Download 2 , Lab Report
Free
Athletes have used it as an ergogenic aid to decrease fatigue and improve performance. However, it is suspected of being associated with low birth weight, abortion, intrauterine growth retardation, and an increased risk of premature membrane rupture. The physiological characteristics of xanthines make them compounds of interest.
Preview sample
Compare Newton and Goethe's theory described in a particular video Chemistry Essay
2 pages (500 words) , Download 2 , Essay
Free
For instance, shadows are grey in their real context but appear greenish blue to the eyes. The difference in appearance is as a result of the fact that the eyes try to counter the strong orange-red light from the sun. A cone exposed to two opposite
Preview sample
Cleaning up oil spills Chemistry Research Paper
2 pages (500 words) , Download 4 , Research Paper
Free
However, to fully comprehend how the cleaning up process of oil spill works, it is necessary to understand the chemistry behind mitigation of oil spills. There are several ways in controlling and cleaning up oil spills. These methods are usually combinations of
Preview sample
    801 - 850 results of 1169 items
    We use cookies to create the best experience for you. Keep on browsing if you are OK with that, or find out how to manage cookies.
    ✕
    Contact Us