Chemistry Essay Examples and Topics. Page 4

In plants, the waxes are found on the cuticles, fruits, and leaves among other parts of the plants. In this light, bees and spermaceti produced the animal wax that was the main source of wax [...]

The geometry of the reactant complex was optimized and scanned to find the lowest energy pathway to bond hydrogen and oxygen atoms of abstraction of the closest hydrogen from the alpha and beta carbons in [...]

20 In the scheelite BiVO4, it is possible to find out a hybridized band structure with Bi 6s and O 2p orbitals.

The amount of radionuclides depends on the concentration in soil, leachability of radionuclide and the solubility, and the sorption capacity of soil particles [2].

Of the two ions, the nitrate ion is more stable than the nitrite ion but can be reduced by the actions of microorganisms to form the latter ion.

The salt sample was then put in a plunger to be compressed followed by measuring the height of the compacted sample, which was 7 cm. Other chemical elements that were found in the salt specimen [...]

Isotopic composition analysis is used to identify cases of food fraud by quantifying the stable isotopic ratio of elements such as carbon, nitrogen, hydrogen, oxygen and sulphur in food.

The weighed salt sample was then put in a sample press machine to be flattened after which the height of the flattened sample was measured and found to be 4 cm.

The purpose of this study was to use isotope ratio mass spectroscopy to determine isotopic disparities of 15nitrogen, 13carbon and 2hydrogen in six cheese samples and distinguish them based on geographic, geological and agricultural practices. [...]

Because of the efficacy with which spectroscopy allows determining the status of oil and the analysis of its compounds, the specified tool should be recognized as superior in detecting the cases of oil fraud.

This paper aims to analyze the purpose of the article, the methods used by the authors, and the implications of results.

Therefore, the presence of nitrite in water is usually used as an indication of pollution due to the formation of nitrite ions during the biodegradation of these compounds.

1. What is the research question the author(s) is trying to answer? In the article, there is no research question the authors try to answer. They do not pose any questions, as well as they do not rely on any questions that could be possibly developed in past studies. Through the lines in the introductory […]

1. What is the research question the author(s) is trying to answer? In fact, there are no direct or indirect research questions in the article. For that reason, it is hard to say what particular questions the authors tried to answer in their project. In the beginning, they identified β–lactoglobulin as one of the main […]

The explanation of the activity for Trp and Tyr is based on the ability of the indolic and phenolic groups to perform as hydrogen donors.

A number of homogeneous catalysts, including liquid catalysts, quaternary ammonium salts, transition metal complexes, and ionic liquid catalysts have been investigated for their catalytic potential in the cyclic addition of CO2 and styrene oxide. The [...]

Molar mass: 118. Molar mass: 18.

This reflective treatise attempts to explore the invention of artificial light, benefits, and usage in the field of chemistry. To begin with, artificial light is used in most of the experiments in the laboratory to [...]

The report describes the source of materials in the manufacture of aluminum alloys, the manufacturing process, and the economic importance of the product.

Furthermore, researchers intended to investigate the impact of human selection on strains' food processing in addition to studying both the genetic variability and plasticity of different fermentation products between strains and food processes.

The Periodic Table is the tool for arranging elements based on the correlation between the periodic function of their atomic numbers and the properties of the elements in question.

Since the equation, =E , yields unique energy, which describes distinctive waves that define the probability of finding an electron in the space of an atom, Schrodinger presented another characteristic, namely, the particulate behavior of [...]

In this experiment, it was hypothesized that the rate of photosynthesis rises with an increase in the concentration of carbon dioxide and went on to test the hypothesis.

This paper will discuss the carbon cycle, which is the continuous movement of carbon atoms through different paths, with a focus on the two major divisions of the process and the human impact on the [...]

The skin is one of the main body organs that can be exposed to the chemical. The distribution of chloroform throughout the body depends on the level and route of exposure.

Therefore, PSVs assist in avoiding the confusion since students can make allusions to their previous knowledge and by solidifying their comprehension of multiple themes.

Many factors such as techniques of dyeing, the contents, the processes and possibilities of recycling influence the choice of size and type of the membrane to be used in a dyehouse [25].

As the residual flue gases move to the other chambers, the pressure of CO2 falls, and thus, collects in one site.

To this end, the literature in this essay tries to establish the challenges that come with the adoption of FO by a state. To this end, the quality of the feed-water influences the fouling of [...]

5 The popularity of polyethylene is rooted in the fact that this polymer is cheap, flexible, durable, and chemically resistant6 It is important to take a closer look at the manufacturing process in order to [...]

The article focuses on the thickness of the membrane and its effects on the said process. In the process of carrying out the study, the thinking and rationalization of these researchers were governed by the [...]

The combination of humid conditions and average temperatures purport the corrosion of rocks containing iron elements by the formation of iron oxide that weakens the rocks.

These important steps are the selection of the fibers which can be used for the production of the wet mopping cloths; the process of laying the chosen type of fibers to make a definite type [...]

The majority of commercial PP is isotactic and possesses a transitional intensity of crystallinity amid the one of high-density polyethylene and low-density polyethylene.

Ethylene glycol polymers are products of additive reactions between ethylene oxide and ethylene glycols. The boiling point and state of ethylene glycol polymers are proportional to molecular weight.

Ethanol is the product of the fermentation of plants, and that is why it can be called a renewable source. That is why it can have a great influence on the issue of energy security.

The aim of the EPA is to continue assessing the health effects of perchlorate, along with the science behind their occurrence in public water systems. The state of California also regulates perchlorate as a contaminant [...]

A delicate balance in the quantities of key ions such as magnesium, phosphate and ammonium is necessary for the success of the method.

In both studies, time was a key factor that helped to determine the blood lead levels and effects of lead on body organs.

Based on these findings, the study came to a conclusion that exposure to DDT and DDE during the prenatal period can to lead to delays in the development of infants.

The selected toxin, which affects the nervous and cardiovascular system, is mercury. Once the nervous system is exposed to mercury compounds, its effectiveness and response are reduced by the harmful compounds.

Manufacturers utilize various techniques in polymerization and one of these is the application of several additives to vary the plastic properties and to attain the desired results for commercial purposes.

The Statement of the Research Objectives: Why Bothering It is obvious that the key goal of the given research is to check for the advantages and the disadvantages of the means of water purification and [...]

The curious mind of Pierre on why a substance seemed to defy a scientific law started the journey that led to the discovery of polonium and radium.

During the de-waxing process, the solvent is subjected to a mixture of the waxy oil. Evaporators The evaporator is used in recovery of the solvent from the de-waxed oil and wax.

Therefore, temperature is the determinant of the absorption of the vapor of the combustible liquid by the air. The flashpoint of a liquid is the least temperature, which there will be enough concentrated vapor of [...]

As a matter of fact, oxygen is present almost everywhere forming two thirds of the body mass of a healthy human being, it accounts for half the mass of the crust of the earth as [...]

Analysis of amphetamine and methamphetamine is carried out in a series of steps that entails employment of numerous tests for conclusive identification of this group of stimulants.

The writer wants to know the source of the contaminants in his blood. The writer continues to describe the nature of the chemicals found in his body.

Enzymes are described as biological proteins which accelerate the rate of reaction of a chemical substance, while inhibitors are elements which reduce the speed of catalyzed reaction of enzyme through connecting into the enzyme and [...]

However, it is this severity of the social as well as the environmental issues associated with the production of the mineral that has generated a big concern from the global authorities leading to interventions of [...]

In the forensic labs, rudiments of environmental wellbeing and safety should be strictly considered. The required quantity of chemicals should be used in crime scenes, and excess spillage must be cleaned.

Chemical processes engineering deals with designing, manufacturing and operation of plant and machinery in industries. Process designing is the most basic and physical step in the whole process of chemical engineering.

It is important to note that, this type of fuel is a fossil fuel and is composed of hydrogen and carbon compounds; hence it is categorized as a hydrogen carbon fuel.

Silicon dioxide is available in plenty, and it can easily be found in several parts of the world. This is because of the ingredients used in making it.

In explaining conceptual change in science, a description of the development of new conceptual structures and their impact on the existing concepts that lead to the replacement of the old concepts is important.

Towards the end of the 18th century, many substances were identifiable in laboratory and the new Lavoisier concepts led to the replacement of the phlogiston theory.

His claim regards the presence of molten metal observed at the basement of the rubble of the collapsed towers. The smoke and dust was also observed to emerge in a sequential fast timing The molten [...]