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Rate of Reaction
The rate of a reaction is the speed at which a chemical reaction happens. If a reaction has a low rate, that means the molecules combine at a slower speed than a reaction with a high rate. Some reactions take hundreds, maybe even thousands, of years while others can happen in less than one second. If you want to think of a very slow reaction, think about how long it takes plants and ancient fish to become fossils (carbonization). The rate of reaction also depends on the type of molecules that are combining. If there are low concentrations of an essential element or compound, the reaction will be slower.
There is another big idea for rates of reaction called collision
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Sodium + hydrochloric acid sulphur dioxide and sodium chloride Thiosulfate acid + water
Na2SO3 (aq) 2HCl (aq) S (s) + SO2 (g) + 2NaCl (aq) + H2O(l)
Sodium thiosulfate, hydrochloric acid
sulphur dioxide and sodium chloride Thiosulfate acid + water
This is a irreversible reaction
States of matter
Name of atom | Chemical symbol | Number used in the chemical reaction |
Sodium | Na | 2 |
Sulphur | S | 2 |
Oxygen | O | 2 |
Hydrogen | H | 2 |
chlorine | Cl | 2 |
Item | Hazard | Risk | Precaution | Emergency action |
Sodium thiosulfate | If it is dropped on the skin it irritates | Irritable | Handle
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-Reduction and Single Displacement Reduction. Lastly, while performing a series of chemical processes, the mass of copper recovered should equal the original mass of copper from the beginning.
II. Data (Experimental Observations)
Part A: Oxidation Reduction Reaction
The weight of the copper starting material was 0.107g. After I weighted the copper, I wrapped the turning into a small ball and place it into a 150 mL beaker. Then, I measured 8 mL of 6 M nitric acid, HNO3, into a 10 ml graduated cylinder. Afterwards, I then slowly added the 6 M HNO3 into the beaker containing the copper. Then, I cover the beaker with a watch glass and observe the reaction. As I was observing the reaction, I
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* Ligase | -Combining 2 molecules coupled to the hydrolysis of ATP |
Enzymes is biologic polymer which can catalyse the chemical reaction. They can’t be destroyed, used up, or permanently changed while they involve in a reaction therefore the physical changes of enzymes will not be affected in a reaction. On the other hand excluding the catalytic of RNA molecules or ribozymes, enzymes are also made from protein. Additionally, every enzymes have their own specific function which makes them work more efficiently. Enzymes are also classify into several classification.
Cofactor of Enzyme:
Metal such as metal ion and small organic molecules such as Coenzyme
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Energy keeps all living organisms alive, as they need a continual supply of energy to function in order to survive. Some of these processes are continuous such as, metabolism, which is the chemical reactions which occur in the body, these occur by using or releasing energy from chemical substances. Another continuous process which use energy is the transporting of molecules in order for them to break down, and to build new ones. The breakdown of large molecules into their simpler forms to release energy is known as catabolism, for example, when glucose is used in a cell to release energy. And the opposite reaction, is called anabolism. This is when energy is used to build complex structures
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peak at 2.90 is due to hydrogen alpha to carbonyl group, and the other alpha hydrogen has a shift of 2.13 ppm. The hydrogen attached to the singly bonded carbon attached to to oxygen has a shift of 3.30 ppm. The other phenyl rings have hydrogens with chemical shifts of 7.36 – 7.38 ppm. However it is difficult to ascertain which diastereomer, R,R or R,S predominates since indications to both are seen. Thus a mix of the diastereomers is seen.
This reaction is divided into two parts. In the first part acetone, L – proline and 4 – nitrobenzaldehyde are reacted to give (R)-4-hydroxy-4-(4-nitrophenyl)butan-2-one as the major product along with (S)-4-hydroxy-4-(4-nitrophenyl)butan-2-one
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harnessed by humans to create energy? It can be and it is through the use of solar cells. Photosynthesis and solar cells are similar, yet different in a few ways.
Creating Our Own Energy
Humans have figured out how to use the power of the sun for energy. Using Solar panels containing semiconductors, we can turn the sun into electricity, a very popular form of energy. In this way, photosynthesis and solar cells are similar, both using the suns light to create a form of energy. The type of energy created, however, is where one difference comes into play. Plants create a chemical energy known as carbohydrates, a simple organic compound of oxygen, carbon and hydrogen, while solar cells use
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increasing, especially in oil and gas industries. The most common solutions are Hard Cr and Quench-Polish-Quench (QPQ) processes. However, these two processes affect the environment adversely. As alternatives, coating layers can be introduced to metal samples. Coatings can be done with or without electricity. If electricity is involved, the process is called electroplating. It is done by immersing the sample that is going to be coated together with an anode of the coating metal in an electrolyte containing salts of the metal to be plated. The other coating method that relies on chemical reaction instead of the surge of current is termed electroless plating.
One popular electroless plating is
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Grignard Synthesis of Triphenylmethanol
Objective: The purpose of this experiment is to synthesize triphenylmethanol from benzophenone via Grignard
reaction. The product will be isolated through extractions and purified by recrystallization. Reaction efficiency will be evaluated through percent yield, percent recovery, and the purity of the final product will be determined by IR, TLC, and mp determination.
Chemicals: bromobenzene, magnesium turnings, diethyl ether, benzophenone, biphenyl, triphenylmethanol, iodine,
6 M HCl, brine, anhydrous MgSO4 or Na2SO4, 10:90 EtOAc/hexanes.
Glassware and equipment: 100 mL RBF, air condenser, Claisen adaptor, 60 and 125 mL addition
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Prepare a 350- to 700-word paper in which you describe the periodic nature and properties of atoms and molecules. Explain at a level of detail Dmitri Mendeleev would have understood how halogens and alkali metals are extremely reactive, whereas noble gases are not reactive. Compare properties of molecules formed from atoms in similar families; for example, H2S versus H2O. Explain what is meant by the electronic structure of atoms. How does knowing the electronic structure of atoms aid chemists in predicting chemical reactions?
Periodic Table is designed to help us understand how elements are going to react to each other and also gives us the breakdown of how many atoms are in each element
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of the reactions. All of the analysis supports that conclusion that the ionic strength of the solution is directly related to the reaction rate.
Harris, D.C. Quantitative Chemical Analysis, 8th ed.; W.H. Freeman: New York, 2010.
Nóbrega, J.A., Rocha, F.P. Ionic Strength Effect on the Rate of Reduction of Hexacyanoferrate(III) by Ascorbic Acid. J.Chem. Educ., 1997, 74 (5), p 560
Sime, R.J. Physical Chemistry: Methods, Techniques, and Experiments.; Saunders College: Philadelphia, 1990.
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reaction moves closer to equilibrium with a fixed a mount of time. (Li, H. & Cann, A. F. 2010).
This process involves the use of catalysts and transesterification to produce biodiesel. There are two processes involved here. Depolymerization which creates renewable diesel and the other one is hydrotreating which produces green diesel or hydrogenation derived renewable diesel. Hydrotreating involved the use of hydrogen and catalysts.
This is one of the methods used to make biofuels. It involves burning of biomass such as dead trees in the absence of oxygen.
This is a very important chemical reaction which takes place before combustion and gasification
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, emulsified oils, etc.;
* Toxins such as pesticides, poisons, herbicides, etc.
* Pharmaceuticals and other hormones.
Waste water quality indicators:
Any oxidizable material present in a natural waterway or in an industrial wastewater will be oxidized both by biochemical (bacterial) or chemical processes. The result is that the oxygen content of the water will be decreased. Basically, the reaction for biochemical oxidation may be written as:
Oxidizable material + bacteria + nutrient + O2 → CO2 + H2O + oxidized inorganics such as NO3- or SO4--
Oxygen consumption by reducing chemicals such as sulfides and nitrites is typified as follows:
S-- + 2 O2 → SO4--
NO2- + ½ O2 → NO3-
Since all natural
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, chemistry and physics. It also takes one with strong skills in written and oral communications.
Pharmaceutical chemistry involves chemical science to pharmacy. Part of this course covers chemicals used as medications, their uses, the preparation and preservations. It is equally important to learn to process and determine the purity and the strength of the chemicals used in its pharmaceutical form so one can understand the allergic and adverse reaction should to much of one type of chemical is used.
Pharmacognosy is a natural source of drugs that are extracted or made out from plants or animals. Even though this process has been around since the early
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Lab #1 “Who has the same solid that I have?”
Different Physical and chemical tests were performed on 10 numbered unknown solids and the results of all tests were compared as a class to try and determine which groups had the same unknown solids based on similarities in properties. It was found that my given unknown solid #11 shared similar properties with the unknown solid #1. A side by side analysis of the reactivity test in which Hydrochloric acid (HCI), lead nitrate (Pb(NO3)2) and sodium hydroxide (NaOH) was added to three separate samples of the compounds unknown #1 and #11 aqueous solutions. The results for both unknowns were identical, leading to the conclusion that my
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Associate Level Material
Brain Response of Behavior
Note: Parts II and III follow below, complete all three.
Neurons process information through signals or nerve impulses in the brain. These are referred to as action potentials and the action is carried through two types of process. These processes are electrical and chemical synapse. Nerve impulse is the electrical signal reach from the chemical signal. the neuron receives it from another neuron through its dendrites. That chemical reaction between neurons is called a terminal buttons. The result, neurotransmitters are released which in turn transmit the message to the next neuron.
The reactions between
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energy, the fossil fuel usage could be rendered obsolete and costly in areas where geothermal wells can be drilled.
The most abundant element in the universe is Hydrogen and the third most abundant element in the Earth’s crust. Hydrogen is a promising fuel staged to replace oil based fuels in the transportation industry as well as power smaller mobile devises like smart phones. Hydrogen is used in fuel cells to produce electricity by bonding with Oxygen in the air to become water. The reaction takes place on the anode and cathode of the cell with the assistance of a catalyst to speed up the reaction. Ions are exchanged during these chemical reactions displace electrons to create a current in
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What is Stress? Webster defines: It a physical, chemical, or emotional factor that causes’s bodily or mental tension and may be a factor in disease causation. Stress is also feeling that’s created when we react to a particular event. It something we are not aware of, and sometime cannot control. Some would define stress as our reaction to the ups and downs of everyday life. Others might define stress as worry, pressure, tension, etc. Stress is defined as the non-specific response of the body to any demand placed on it, by Dr. Hans Seyle. In other words, anything that causes a "change or a reaction" in your body is called stress.
In today world lot of us are unaware this is a problem
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stirring then 6cm3 of acetyl acetone was added drop by drop into the solution.
4. The crude product was filtered off by using suction filtration.
5. It was washed well with water and it was drained thoroughly.
6. The percentage(%) yield was calculated.
Mass of copper (II) nitrate | 6.0065g |
Mass of watch glass | 36.1443g |
Mass of filter paper | 0.3288g |
Mass of Bis(Acetylacetonato)copper(II) + Mass of watch glass + Mass of filter paper | 38.4764g |
Mass of Bis(Acetylacetonato) copper (II) | 2.0033g |
Chemical equation :
Equation 1 : (Cu(NO3)2∙3H2O) → Cu(H2O)62+ + 2NO3-
Equation 2 :
Equation 3 : [Cu(NH3)4(H2O)6]2
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from a 6 carbon molecule to a 2 carbon molecule through series of reactions and with ATP and NADPH produced during the light reaction. This molecule is eventually converted to glucose. Ultimately CO2 used to make this glucose in the Calvin cycle.
d. Describe the two phases of the photosynthetic process.
The two phases in photosynthesis include light dependent reactions and light independent reactions. The light dependent reaction takes place where there is a light source (naturally it would be sunlight). This phase takes hydrogen from the water, releases oxygen, changes light energy into chemical energy, and makes glucose:
2H2O 4H+ + 4e- + O2
The light independent reaction occurs
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chemical pesticides and reduce the cost of bringing a crop to market (Mandelsohn et al. 2003).
Carson says that a variety of alternatives to chemical control of insects is available. The solutions are biologically based on the understanding of the living organisms they seek to control and the whole fabric of life to which the organisms belong. (Carson 1962) Farmers often spray large quantities of herbicides to destroy weeds, which is time consuming, expensive and requires a lot of care. Crop plants genetically engineered to be resistant to herbs could prevent environmental damage by reducing the amount of herbicides needed.
As population grows and more land being utilized for housing, farmers will
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up to be friendlier and nicer as opposed to the babies whose mother was more hands off who grew up to be aggressive and mean. When the examined further they found that in the brain of the babies that were being licked and cared for cells located in the hippocampus turned on a gene that created stress hormones. But when the babies weren’t getting that attention a chemical reaction occurred that shut down the gene and caused problems with the stress hormone that stayed until later in life. This lead to looking into the research of human babies and calming themselves. They found that the babies that had to learn to calm themselves because the mother was standoffish or anything else had more
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for human beings. Vitamin C’s IUPAC name is 2-oxo-L-theo-hexono-1,4-lactone-2,3-enediol. We need a constant supply of vitamin C in our diet as the human body cannot store vitamin C because it is not a fat-soluble vitamin and where there is excess vitamin C, it is removed from the body through the urine. As well as this, vitamin C is very important in the growth and repair of tissues. It plays a crucial role in the healing of wounds and the repair and maintenance of teeth, cartilage and bones.
Ascorbic acid is a “vitamer” of vitamin C that has antioxidant properties and is soluble in water to create a slightly acidic solution. A vitamer is “One of two or more related chemical substances
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when oxygen is not bound
Myoglobin’s O2 Binding Curve is Hyperbolic
* Consider the chemical equation for O2 reversibly bind with Mb:
Mb + O2 MbO2
* The dissociation constant for this reaction is:
But this relationship is not helpful experimentally, so we need to reformulate it in terms that we can measure
* Begin by writing an equation that gives us a measure of the fraction of binding sites that are occupied
* After some algebra, obtain
YO2= O2K+O2 |
* O2 is a gas, therefore its concentration can be expressed via its partial pressure, pO2
YO2= pO2K+pO2 |
When K = pO2, half the binding sites are occupied
K = p60
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EEN 100:ENVIRONMENTAL EDUCATION
Ozone layer is a deep layer in the stratosphere, encircling the earth that has large amounts of ozone in it. Ozone is a colourless gas found in the upper atmosphere of the earth that is formed when oxygen molecules absorbs ultraviolet, and undergo a chemical reaction known as photo dissociation or photolysis.
In this process, a single molecule of oxygen breaks down into two oxygen atoms.The free oxygen atom[o],then combines with an oxygen molecule and forms a molecule of ozone.The ozone molecule in turn absorbs ultraviolet rays between 310-200nn[nanometer] wavelength and thereby prevent these harmful
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16 Upon curing they shrink more as compared to amorphous thermoplastics. Examples are polypropylene (PP), polyethylene (PE) .
S. Amin and M. Amin In order to resolve the problem of low thermal and chemical stability of thermoplastic elastomers, dynamic vulcanization techniques were used in late ] plastic. In dynamic vulcanization the thermoplastic and elastomers are both cross-linked and physically mixed together. This gave rise to a second generation of thermoplastic elastomers which had better tensile strength and oil resistance as compared to those formed by physical mixing only . ] ] ] _ were introduced which were made by same dynamic vulcanization process but using natural
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can be exposed to the hydrogen or oxygen. The platinum-coated side of the catalyst faces the PEM
|Chemical reaction: |
|Anode side: |
|2H2 => 4H+ + 4e- |
|Cathode side: |
|O2 + 4H+ + 4e- => 2H2O |
|Net reaction: |
|2H2 + O2 => 2H2O |
In such a fuel cell, only 0.7 volts are produced. To increase the voltage, many separate fuel cells must be combined forming a fuel-cell stack.
Main markets for fuel cell technology
There are three main markets for fuel
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copper wire was the cathode site while the iron nail was the anode site. In bimetallic corrosion, corrosion of a metal is accelerated when placed in contact with metal with a different and higher potential. The metal which oxidizes easily and is the anode will be the one that will corrode.
Corrosion is usually defined as degradation of the properties of a material as a result of chemical reaction with the environment.  Corrosion is a spontaneous electrochemical process that has caused tens of billions of dollars of damage to cars, ships, buildings, and bridges each year. The most common and economically destructive form of corrosion is the rusting of iron
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to washing, serge or zigzag the cut edges to minimize raveling.
Denim washes are of two types:
1. Mechanical washes
- Stone wash
2. Chemical washes
- Denim bleaching
- Enzyme wash
- Acid wash
In this process a strong oxidative bleaching agent such as sodium hypochlorite or KMnO4 is added during the washing with or without stone addition.
Discoloration produced is usually more apparent depending on strength of the bleach liquor quantity, temperature and treatment time.
It is preferable to have strong bleach with short treatment time.
Care should be taken for the bleached goods so that they should be adequately
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When the word gender is brought up, the first thought that comes to mind is weither the person is male or female. This is not necessarily correct. The term sex is a biological term that refers to the physical differences between males and females. If sex is the term that encompasses male or female, then what exactly is gender?
Gender is a psychological term that refers to the awareness and reaction to the biological term of sex. It also is a term that can construe more than one meaning. Gender is determined by biological, psychological, and sociological factors. Gender consists of three elements: gender role, gender identity, and sexual orientation or preference (Kenyon
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when the glucose molecule is taken apart. The energy released from this process is larger than the process of fermentation. In this process about 36 ATP molecules result for each glucose molecule.
Yeast can make energy from sugar by the process of aerobic respiration or fermentation. During aerobic respiration there needs to be oxygen present. The chemical formula for this is [pic]. If there is no oxygen available (anaerobic conditions) yeast can use the process of fermentation (Manning, 2001). This process also uses sugar, but there is no oxygen,, so the chemical formula is changed to[pic]. Both formulas are similar because they both produce ATP and carbon dioxide (Manning, 2001
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propagate complex chemical reactions on their surfaces that alter chlorine and nitrogen chemical species in the stratosphere. This effect, combined with increased chlorine levels from anthropogenic chlorofluorocarbon emissions generate chlorine monoxide, which has a detrimental impact on the ozone budget, thus enhancing biologically destructive ultraviolet radiation and encouraging net warming. The lowest ozone concentrations of the 21st century were recorded the year after the Pinatubo event (7). If negative albedo dominates, the cryosphere will be undermined leading to sea level rise and a runaway climate via the release of methane clathrates from permafrost and hydrate basins. This is
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psychoactive or mind-altering properties) stem from an ingredient called delta-9-tetrahydrocannabinol (THC), which resembles a chemical that the body and brain make naturally. THC attaches to specialized proteins, called cannabinoid receptors (CBRs), to which the body’s natural chemicals normally bind. Along with THC, the marijuana plant contains over 400 other chemical compounds, including other cannabinoids that may be biologically active and vary from plant to plant. This makes it difficult to consider its use as a medicine even though some of marijuana’s specific ingredients may offer benefits.
THC is an FDA-approved medication. It was shown in carefully controlled clinical trials to have
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microscope (STM) to see and manipulate atoms at the surface of the silicon crystal inside an ultra-high vacuum chamber. Using a lithographic process, they patterned phosphorus atoms into functional devices on the crystal, then covered them with a non-reactive layer of hydrogen. Hydrogen atoms were removed selectively in precisely defined regions with the super-fine metal tip of the STM. A controlled chemical reaction then incorporated phosphorus atoms into the silicon surface. Finally, the structure was encapsulated with a silicon layer and the device contacted electrically using an intricate system of alignment markers on the silicon chip to align metallic connects.The electronic properties
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experiments (e.g. use of gloves or mask).
Making Accurate Observation
The experiment will make it clear about the needed observation, e.g. the color changes
when two solutions are added together or time taken for a chemical reaction. Ensure that
you know the proper handling of relevant equipment before the start of experiment.
Think carefully about the precision of your observations. You may need to find out
reference for color description from external sources (e.g. reference books or online
references) before the practical session.
Recording Results in an Appropriate Form
Results can be recorded in various ways. Often it is helpful to record raw data in a table.
Most data will be
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. What interesting to me is that officials say that marijuana is a gateway to harsher drugs and I don’t agree with that because I used to smoke marijuana at a young age and I never tried any other drug in my life. One thing that I do agree on is that it may cause more accidents at work because your judgment and reaction is a little slower.
When it comes to pros on legalizing medical marijuana Joycelyn Elder a former US surgeon general stated” the evidence is overwhelming that marijuana can relieve certain types of pain, nausea, vomiting and other symptoms caused by such illness as multiple sclerosis, cancer and AID-- or by the harsh drugs sometimes used to treat them and it can do so with
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Effect Of Dividends On Stock Prices
EFFECT OF DIVIDENDS ON STOCK PRICES
Effect of Dividends on Stock Prices– A Case of Chemical and Pharmaceutical Industry of Pakistan Kanwal Iqbal Khan University of Central Punjab, Lahore
Proceedings of 2nd International Conference on Business Management (ISBN: 978-969-9368-06-6)
Effect Of Dividends On Stock Prices
Abstract In Pakistan corporate sector is adversely facing competition due to economic downturn in the world and making efforts to survive in a competitive and uncertain economic environment. This study will help to improve dividend decisions of corporate sector through proper implementation of their dividend policies
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Departmental Elective IV
Open Elective II
CE 101 ENVIRONMENTAL STUDIES (2-0-0-4)
Water Pollution: Water quality, physical, chemical & biological characteristics of water & waste water, ground
water pollution, water borne diseases.
Air & Noise Pollution: Primary & secondary air pollutants, sources, effects & control of- carbon monoxide,
nitrogen oxides, hydrocarbons, sulphur dioxide & particulates, Air quality standards, global warming, acid rain,
El Nino, ozone hole. Classification and measurement of noise, effects
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students: This study could serve as a source of feedback in the monitoring of curiosity, willingness and dedications for them to create their own experimental set-up and expose students’ oral communications on reasoning skills. This will provide for students to create better research projects out of waste materials.
To the future researchers: The findings of the study may provide them insights to further evaluate the use of C. papaya leaves to produce an alternative tea.
Definition of Terms
Coumarin - is a fragrant organic chemical compound in the benzopyrone chemical class, which is a colorless crystalline substance in its standard state. It is a natural substance found in many plants
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can copy itself. When this process occurs, the double helix strands of DNA are used as a pattern for replicating the base sequences. This is crucial during cell division due to the imperative need for each new cell to carry a precise copy of the DNA found in the old cell.
Adenine (A), thymine (T), guanine (G), cytosine (C) and uracil (U) are five out of about three billion chemical bases that store DNA’s coded information; over 99% of these bases have been found to be consistent in all people. The sequence of the bases is extremely important because the order that they are found in, reveals the information necessary and accessible for creating and upholding an organism. A simple way to
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What Is Bipolar Disorder?
“What a creature of strange moods [Winston Churchill] is - always at the top of the wheel of confidence or at the bottom of an intense depression,” once said William Maxwell "Max" Aitken. Bipolar disorder is a chemical imbalance in the brain that has yet to be unraveled; it causes many mood swings that can happen at a moment’s notice without a word. With many mental illnesses in order to diagnose them it takes time and observation with a health care provider. Treatment is also an aspect that takes planning and reflection mostly on how the patient feels in reaction to the medication that they are taking and other forms of
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). While it is a nurse’s job to care for people, I believe a person is also responsible for learning to care for themselves. For example, a patient diagnosed with emphysema who continues to smoke tobacco daily can only receive a limited amount of assistance from a nurse; ultimately, the patient still has to take responsibility for his own health.
The domain of environment includes both internal and external factors. Internal factors of environment include outlook on life, mood, and reaction modality when faced with a problem. I believe a nurse’s positive outlook ultimately influences the patient’s outlook creating a more comfortable environment. External factors include culture and upbringing
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along with the desired gene. This will mean that when this tomato is taken by someone who is allergic to nuts he will have the same allergic reaction as the one he gets after taking nuts. Quality control activities which tests the product are very crucial in this kind of industry so as to save the company’s reputation of providing high nutritive tomatoes of quality such that the consumer will be satisfied (Vincent et al, 1998).
A company’s main objective is to see an increase its bottom line. Its main focus is to acquire profits if not then that company is bound to be closed. Building customer satisfaction and loyalty by providing quality in products is one way in which a company can contribute
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. Legend is that they were a race who had been nearly wiped out by a meteor shower around 3000 BC. The lizard people then constructed 13 subterranean settlements along the Pacific Coast. This was done to shelter themselves against future detriments. Each subterranean settlement is what we call in modern times a city, in which was divided to house a thousand families each. They also stockpiled essentials of life to maintain. So greatly advanced scientifically the Lizard people developed a chemical solution that melted solid bedrock to bore out the tunnels and rooms of their subsurface shelters. This was done without removing any earth and rock. They also developed a cement far stronger than any
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Curettage is a surgical method of removing cancerous cells and is followed by electrodessication.
• Immunotherapy is a treatment technique which uses medicines to stimulate a person’s own immune system to recognize and destroy the cancer cells. Ipillmumab is an example of an immunotherapy drug and it is a synthetic version of antibodies found in a person immune system and it can be used to fight advance cases of melanoma cancers. It targets a chemical in the body called CTLA-4 that regulates the production of T lymphatic cells which are cells that help remove foreign substances or dead cells from the body. When the Ipillmumab blocks CTLA-4 the production T cells will increase thus
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). Nevertheless, Swaab’s research indicated that the sexually dimorphic nucleus (SDN) of more than 100 individuals lessened in volume and cell quantity in females of only 2 to 4 years postnatal (Diamond, 2006). These results complicated the discoveries of the brain research since not only hormonal and chemical factors, but also the social factors, may have affected the process.
A research by Gorski and Allen observed the fore commissure of the brain, getting that homosexual males and females had a bigger size as compared to the heterosexual males (Schumm, 2010). Nevertheless, later researches making use of larger sample sizes did not exhibit such variations. Complicating the problem of
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the predicted BOD when TOC = 1? Give your answer up to three decimal places. |
| Answer |
The predicted value of the BOD at TOC = 1 is given by the regression equation ŷ = −55.43 + 1.507 x = −55.43 + 1.507 × 1 = −53.923
| Points Earned: | 1/1 |
Correct Answer: | -53.923 |
Your Response: | -53.923 |
| Keeping water supplies clean requires regular measurement of levels of pollutants. The measurements are indirect—a typical analysis involves forming a dye by a chemical reaction with the dissolved pollutant, then passing light through the solution and measuring its “absorbence.” To calibrate such measurements, the laboratory measures known standard solutions and uses regression to
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information that has already been processed and stored previously and acting on that information to produce some type of reaction or response. Many patients with schizophrenia also are very shy and will not associate with strangers and even friends, they are not known for being outgoing and friendly in public. The disturbance encompasses not just executive functions, but several forms of memory, attention, emotion, and motor activity. Its underlying neural network is not only cortical, but also subcortical. “To express the diversity of the disturbance and to call attention to its subcortical components, we refer to it as “cognitive dysmetria”(Andreasen, 1990). Dysmetria expresses itself in the