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Although many people of polymers as mere plastics used in making household objects and packaging, polymers have a variety of application in everyday life. Polymers and composites, i.e., materials that result from a combination of more than two
The paper analyses various aspects of ethanol usage in vehicles. Even though this article has not given a specific conclusion, it helps the readers to understand the pros and cons of using encouraging ethanol use in gasoline. It has quoted the opinions of formidable agencies like the US Department of Energy to substantiate the arguments.
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Anaerobic metabolism is more energy efficient because it helps in consuming the less useful carbon dioxide gas from the atmosphere. Two ATP are produced at glycolysis stage a process known as substrate-level phosphorylation. When fermentation occurs in a sealed container, it means that there is no supply of oxygen and the process will be anaerobic.
This paper discusses some of the physical and chemical properties of benzene, its uses and hazards.
Benzene is a nonpolar molecule with a molecular weight of 78.11 g/mole. It is also known as benzol and mineral naphtha, and has a chemical reference number
They are known to have a difference in pharmacological activities. They are also known to be similar in terms of morphology, hence normally classified by experts or herb farmers. This process needs a long term experience and it is based on the judgment. Furthermore, they tend to be fragile as well as very hard to be differentiated.
It plays its role by opening sodium Na and potassium K channels. Upon its release, glutamate is conveyed from the synaptic cleft either to adjacent neurons or into the nearby glial cells. Those neurons that produce glutamate at their Synaptics are called glutamatergic. The principal effect of glutamate s the fast excitation.
In effect, this evaporation of the water due to a humid atmospheric temperature cools me down. Sweating is basically our body’s internal cooling system and can be likened to a car’s radiator which cools the engine when it
Cyclohexanol is a secondary alcohol that undergoes dehydration by an E1 mechanism. This molecule is related to cyclohexane with replacement of one hydrogen atom of a hydroxyl group. The major intermediate of this
The bleaching effect is achieved through oxidation or reduction process. The most commonly used bleach agents made of chlorine compounds decolorizes by oxidation. Oxidation refers to the process whereby the compound removes oxygen from one compound or
There birds fed on small fish and bred on the shores. This behavior of the birds was unanticipated and instigated a wave of curiosity in the scientists and researchers.
About two and a half decades later, in
The author of the text comments on the peculiarities of fuel cells. Notably, all fuel cells contain an anode, the positive electrode, a cathode the negative electrode and an electrolyte-a liquid that allows charges to move between the two sides of the fuel cell. And this electrolyte has to be in liquid form to reduce hydrogen molecule leakage via the container’s walls.
Over a long period, the process of aluminum manufacture involved a cumbersome process that required lot of energy. The last century has however realized a tremendous turn around in this matter as today new
In the current world, there are many different types of tetracycline antibiotics that are widely used. Tetracycline antibiotics were obtained after the systematic screening of soil. They are broad spectrum in action and are effective against a number of gram-positive, gram-negative bacteria, rickettsiae, and Chlamydia.
The elimination of any of the above conditions will result to no corrosion.
Water corrosion is one of the common types of corrosion. At normal atmospheric temperatures the moisture from the air is just enough
The author states that amorphous materials are usually prepared by the rapid cooling process of molten material. The cooling process reduces the movement of the molecules of the materials before they are arranged in a thermodynamic crystalline state. Amorphous materials may also be prepared by additives that tend to interfere with the primary constituent.
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Visual observation of simply adding a few drops of salad oil in water shows that oil is less dense than water and is immiscible. The enzyme reaction was studied using the enzymes Tyrosinase and Sucrase. The effect of different physical parameters including temperature, enzyme concentration, and pH was determined for the enzyme tyrosinase.
Ammonium compounds are identified by an ammonium ion in their composition. They quickly lose stability when exposed to heat, hence decompose in two ways. One of them is the decomposition of the ammonium compound into its respective initial compounds that were used to form it. Only simple compounds of ammonia that are regarded as less hazardous.
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Authors of the article “Water Fluoridation: A Critical Review of the Physiological Effects of Ingested Fluoride as a Public Health Intervention”, have applied present indefinite tense and present perfect tense throughout the article; for example ― “Fluorine is the world’s 13th most abundant element and constitutes 0.08% of the Earth crust".
Generally, it is quite essential to state that special emphasis was given to the application of catalysis and Le Chatelier's principles. While all processes were designed to increase the yields, at times some of the principles were compromised for other considerations such as improving the reaction rate.
cian, without more allusion to the design engineers themselves can build the machine for the above-mentioned purpose as well as gain insight into the design as well as the function of a mass spectrometer. The mass spectrometer is projected to identify smuggled drugs by
Generally, according to the Material Safety Data Sheet of a fire extinguisher with recycled Halon 1301 and Methanol, human hazards include asphyxiation or suffocation due to lack of oxygen. Personnel who would be inhaling this toxicant will breathe heavier as well as this gas is much heavier than air.
The resultant solution was then cooled in an ice-bath, followed by the oxidation reaction. The oxidation reaction was performed by adding water, petroleum ether and HCL bit by bit, each time removing the aqueous
The author of the essay explains the presumptive test, a method that Forensic Drug Testing uses to analyze and determine drugs and other substances with unknown characteristics. Forensic Drug Testing uses presumptive tests alongside confirmatory tests to analyze the unknown substance and determine its identity.
During the active phase of the condition, the patient, who were otherwise healthy, presents with psychotic symptoms. Some of these include auditory hallucinations, disturbance in the way of thinking, social withdrawal, unusual behavior/speech and delusions.
Q4. NO+ ligand would form a bent i.e. V-shaped geometry in a metal complex. More electrons are pulled to N in the radical hence the metallic ion would be attracted to the partially negatively charged N atom. The lone pair electron in the N atom cause attraction of positively
If the results are the similar, I would move to the next step, which is testing both the mothers voluntarily. Similar results i.e. chemical components of their blood such as level of metals would give a
For example, blue solutions transmitted light at 430 nanometers, whereas blue-green transmitted at 470 nm. On the other hand, green color transmitted light at 564 nm while the red color transmitted light at 635 nm.
It was noted that transmittance reduced with
The dehydrating agent was to remove the OH group from the cyclohexanol leading to the formation of cation as the intermediate product and thereafter remove a hydrogen atom from the cation resulting in the formation of cyclohexene. The mixture of approximately 10g of cyclohexanol, 3 mL of 85% phosphoric acid and 1-2 boiling chips was put inside the distillation flask.
Long time exposure to radiation may have long term effects such as development of leukemia and cancer. Damage to human DNA causes reproductive effects such as giving birth to deformed children. High exposure to radiation kills. Roentgen (rem) is a unit used to
It is a paradox that however useful, some of these chemicals negatively the environment and affect human health. Ergo, they need to be properly regulated and monitored in order to address health and safety risks. Congressional interest in revising chemical control laws has heightened in recent years.
The author prepares eight nutrient broth cultures by adding 25 ml of nutrient broth to each of eight of the centrifuge tubes. He adds a colony of E. coli ATCC 15766 to each of four of the centrifuge tubes and adds a colony of Staphylococcus aureus ATCC 157293 to each of four of the centrifuge tubes.
Production of aluminum in raw form requires huge amount of energy, various natural resources required to produce aluminum includes water and energy resources. Bauxite is utilized during the production of aluminum, which requires both
It also has good thermal, mechanical, and electrical properties which are far better than normal graphites. The figure below shows a prylotic graphite (PG, 2014).
Because of its low particulates and chemical resistance
This problem is solved by using foam with water. The foam with water is treated water that reduces surface tension and this allows more surface area of water droplets applied to contact the fire. This necessitates increased heat transfer
Solar technological innovation are recognized as either inactive solar or effective solar based on the way they attract, turn and spread solar energy. Active solar methods consist of the use of solar sections and solar heat lovers to
When employing qualitative analysis in determination of identity of unknown solution, similar tests are performed on a known and unknown sample and their characteristics are matched in order to determine