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Particulate matter is a mixture of liquids, droplets, and solid particles found in the air. The particles include soot, dirt, smoke, or dust, which are darker or larger enough to be seen with naked eyes or small to be seen through an electron microscope. Some of the sources of particle...
National-wide, the air quality is moderate with a 51-100 air quality index. The regions with poor air quality forecast in the United States of America are California, Pennsylvania, Texas, Washington, and Oregon. The current air quality in Ohio, where I am currently staying, is 48.2, which is unhealthy, and it...
Some of the findings of the EPA’s Our Nation’s Air report explain that air pollutants have immensely dropped since 1990 by 77%. It also states that most air pollution comes from deposition, natural emissions, haze, and transport. It also explains how air pollution can affect the environment and our health...
The ammonium ion is one of the pollutants that is a positively charged ion formed by ammonia, which can cause health complications to both animals and humans. Over the years since1985, the production of ammonium has been increasing, which is concerning until 2012. Sulfate is another pollutant in which acids,...
Potassium 40K is a very reactive element because it is a radioactive element and has a very long half-life. The half-life for 40 K is 39.1015 seconds. Three beta decay types occur in Potassium 40, and they take about 89.28% of the total time to decay. Calcium 40 emits a...
When the short-lived iodine splits, there is the formation of thyroid cells. When these cells collect or combine into one, they form iodide, which is as radioactive as the initial component material. The particles that result from these lines, form unstable radioiodine, which can cause delayed effects and chronic and...
Alcoholic is a form of beverage that contains ethanol, a member of hydroxyl group. Ethanol is commonly referred to as alcohol by International Food Information Service and can only be used for human consumption if mixed with agricultural products. However, pure ethanol cannot be consumed by humans, as it is...
This is mainly because the order of reaction of alkyl halides increases as the atomic number increases. For any reaction to take place in alkyl halides, the carbon halogen bond must always be broken; the harder it is, the slower the reaction. The bonds in halides become stronger as you...
Breakthrough time is best understood as the time that is needed to allow penetration of chemicals through a protective material and into the analytical instrument which detects it. It assesses the length of time that workers can be protected from contaminants when wearing protective garments. It is recommended that most...
T1 weighting The net magnetization vector (NMV) is spun into the transverse plane after the 90° rf excitation pulse is applied. The recovery of T1 takes place when nuclei lose energy, and NMV starts realigning with B0 leading to the recovery of longitudinal magnetization. Fats usually have a short T1...
Discuss generic drugs. What does it mean for something to be ‘generic’? In the pharmaceutical industry, what does it mean for something to be a generic drug? Why do generic drugs cost less? Compared to the ‘name’ brands, comment on their effectiveness, and any potential problems that come from using...
Design a series of experiments that demonstrate the effect of temperature, concentration, and surface area on reaction rates. Describe what temperature, surface area, and concentration are. Explain how differences in temperature, concentration, and suffice area affect reaction rates. Explain what Collison theory is and how it relates to the experiment.
Find an article that links chemistry to a current issue in healthcare or the environment. There are many “Chemistry in Everyday Life” topics, write a brief summary of the article. Focus on Insufficient Iodine and its Effect on the Thyroid. Find an article that links a topic we’ve covered in...
Observe what happens to two different solutes when added to water and then filtered. In 1st person past tense, write a summary of what you actually did in performing the experiment. Be sure to include any modifications. You should include enough detail so that someone could reproduce the experiment based...
The following are definitions for airborne various materials: dust, fumes, smoke, aerosols, mists, gases, and vapors. Dust – solid particles produced by applying significant mechanical force to separate them from an object, such as wooden dust from drilling or sawing or minuscule pieces of metal from hammering or friction. Fumes...
Despite the fact that the tap water undergoes significant filtering prior to its release into the system, people need to know what contaminants it can contain, what they can cause, and what their origin is. Turbidity is an observable determinant of water quality, which represents the number of particles that...
The main difference is about the national income and the level of full employment. According to the Keynesian theory of income determination, the national income determination equilibrium may be reached at less than full employment. Also, the level of total spending is not always equal to total income. Hence, workers...
People generally use different forms of information in their day-to-day life. Their accessibility to information through digital media is also gaining much importance in various fields like office, library, and industries. In developing a system, it should be kept in mind that it is designed to satisfy the needs of...
A glucose strip measures the concentration of glucose that is formed when lactase catalyzes the enzymatic breakdown of lactose into glucose and galactose.
The bicarbonate buffering system comprises weak carbonic acid and bicarbonate ions. Its function is to regulate the pH of the blood. When any acidic substance enters the blood, hydrogen ions are neutralized by the formation of carbonic acid and water. Given that carbonic acid is already part of the buffer...
By adding a basic substance such as sodium hydroxide solution.
The acidity or basicity of a substance can be inferred from knowing its pH value.
The pH scale enables the classification of substances as acids or bases. Scientific applications include the measurement of soil pH in agriculture, during wastewater treatment to determine the purity of water, in chemical reactions during industrial processes, and performing specific research.
The RandDSystems and Millipore catalogs include several products with different technological capabilities. The highest sensitivity to analysis has a set of SMC ™ Human Interleukin 6 (IL-6) High Sensitivity Immunoassay Kit by Millipore, which defines a peptide from the threshold of 0.08 pg/mL. A little different is the Human IL-6...
ELISA is an enzyme-linked immunoassay that uses antigen-antibody interaction as the basis for a reaction. Interleukin, like a peptide, has an antigen that binds specifically to antibodies. The mixture is created in each well of the microplate, and the intense coloring determines the quantitative measure of the peptide. According to...
To identify interleukin 6 and quantify it, the serum taken from the patient’s venous blood is examined. Moreover, its detection is also possible for exudation in the case of an inflammatory process and urine, but in clinical practice, blood is most often used. Determination of IL-6 levels in serum works...
If three sodium ions move from the ICF into the ECF, the ECF is now hypertonic to the ICF. The sodium ion got out of the cell through the sodium-potassium pump, which is a membrane-associated protein channel that uses ATP to move sodium and potassium ions against their concentration gradient....
Covalently bonded crystals’ dislocation motion is limited due to the high strength and the highly directional nature of bonds (between the core and localized bonds). In the ionic bonded crystal, the same is less directional (between positive ions and negative ions), and any slip is restricted, but while in metallically...
During glass transition, which is displayed only in amorphous polymers, molecules are frozen, and the crystalline portion remains so during the transition. It’s observed at low-temperature, molecules can slowly vibrate but are otherwise generally rigid and brittle.
Major difference between chain and step polymerization. Step polymerization Chain polymerization Polymer grow by the reaction of any mutually reactive species of any size. Polymer grow only through the addition of monomer molecules at the end of the active chain center. Long-chain is only achieved at extreme high reaction of...
The repeat unit is part of a polymer chain which is repeated to produce a complete polymer when linked except at the ends, while the degree of polymerization is the number of monomers in a polymer.
It is important to keep in mind that only those creatures that have solid elements in their bodies (e.g., a skeleton, a shield, etc.) can form fossils. According to the mechanism of fossils creation, it is necessary that the cavity created by the decayed solid elements of the organism should...
a. Nitrogen dioxide (NO2). b. As compared to 200 years ago, the forests in the Pacific Northwest have become denser. c. Acidic rainfall results from the burning of fossil fuels and mainly coal. This leads to the emission of sulfur into the atmosphere in the form of sulfur dioxide (SO2)....
I believe that the most important chemical elements found in the human body are carbon, oxygen, hydrogen, and nitrogen. This is because these elements make up the vast share of substances and components that are essential for our body to function. For example, hydrogen allows for the creation of hydrogen...
a. NOx comes from different burnt fuels, cars, trucks, and power plants. b. There are different origins of these particles, for example, dust or smoke. c. These particles are very small, and their density in one cubic centimeter of air can be very high. Thus, they can penetrate the smallest...
Smog can be defined as a mixture of gases and very small solid or liquid particles, also known as particulate matter. Smog consists of such gases as ozone, oxides of nitrogen, Sulphur dioxide, and NOx.
In “Pride and Prejudice”, dance performs as the setting for some social rituals. Like that of courtship, for example. Dance enables people to learn and socialize with each other. It goes this way both in the novel and in real life. Especially when it comes to the Victorian era. It...
a. The anion (more electronegative) component in an ionic compound is typically a nonmetallic element and designated as X. The cation (more electropositive) component is a metallic element and designated as M. A vacant lattice site is designated as V. Atoms or ions can occupy cation (M) sites, anion (X)...
a. The rules of Pauling’s relating crystal structures are: bonding strength, coordination of the polyhedral, linkage for polyhedral, cation evasion, environment homogeneity. b. Na2O When two sodium atoms combine to form a molecule, they share two electrons. Each atom then has a complete shell of eight electrons. The electron structure...
Uncovered lightbulbs may expose food to physical and chemical hazard. Explanation: Food safety is concerns with a variety of hazards, including biological, chemical, and physical. Biological hazards occur due to bacteria, viruses, parasites, and mold in products, which lead to foodborne illness. Chemical hazards happen when toxic chemicals or allergens...
A sweet taste can hide the taste of alcohol so answer B is the correct one. Explanation: Most of the energy drinks that people use as mixers are very sweet because they contain a lot of artificial sweeteners. These help to hide the taste of alcohol and makes drinking easier...
Proteins are polymers because they consist of long sequences of amino acids. Lipids have a single structure formed by glycerol and three fatty acids. Explanation: A monomer is a molecule that can attach itself to other monomers, thus forming a more complex structure. A large molecule that is composed of...