Cj tavner
To the second test tube, add 5 drops of HCl 12M one drop at a time with stirring. Put the remainder of cobalt solution into a 4th test tube.
Subjects: Physics, Science
Pages: 3
Words: 700
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Complete Essay Samples on Science
Recent application of classical mechanics
A recent application of classical mechanic that has happened within 6 months is an update of speed of light, where the OPERA at CERN experimented and got results that indicated some neutrinos moved faster than the speed of light. This result was quite surprising because the theory of Einstein has been confirmed a number of β
In what respects is pluto more like a moon than a jovian or terrestrial planet
A Jovian planet is a real planet, which Pluto is not currently. Is Pluto a Planet: Historical Journey Through the Solar System.
Projectile motion lab: using a toy gun
Hypothesis: The shape of the path travelled by the projectile, in this case the bullet of the gun, is a parabolic. As the height of the bullet's release increases the the time to reach the ground will increase, and therefore the range of the bullet will increase.
Astronomy2
Astronomy Questions al Affiliation A) B) Hubble introduced the standard ruler assumption which s that the galaxies in the universe are in the same type and they have the same size physically irrespective of their positions.2. The cosmology continuing the Shapley Curtis Debate was about the universe creating a controversy among the astronomers and to β
Keralaβs development experience: a search for a micro response to a macro process
Kerala's development experience: a search for a micro response to a macro process abstract The concept of development, in the sense of achieving ' human good' has always been there since the advent of human society, only with varying understanding, emphasis, and implications. Kerala's development experience has to be understood only in the context of β
Your choice
One of the famous theories presented proposes an explanation subject to experimentation of the development of the galaxy is the big bang theory. It is worth noting that the theory is the most recognized theory in the efforts to try to explain the foundation of the space and is therefore not the only theory consistent β
East africas great rift valley: a complex rift system by james wood and alex guth
The Great Rift Valley in East Africa comprises of two major rifts the Western rift and the Eastern rift with a third rift known as the Ethiopian rift. This is due to the discovery of many human fossils in the rift valley region.
Conservation of momentum – lab report example
Conservation of momentum Conclusion Results of the first section of experiment one show an inverse relationship between mass and velo as average velocity reduces as more masses are added to the plunger cart and this indicates proportionality constant. Velocity is however higher when mass is added to the non-plunger cart than when mass is added β
Narration to process analysis
Set a pace, make sure you set time aside each day to study of if not everyday make a schedule that works for you, if you have kids and they go to school and you can study during the day that's a good time of if they take a nap that's another good time. But β
Projectile motion
Measure the distance from the edge of the table to the end of the ramp. We measured the horizontal and vertical distances that the projectile traveled from the end of the ramp to when it hit the floor my using a meter stick to measure.-The correct equation for the horizontal motion used was: V=?
Labor and the grievance process
The history of the grievance process in American history is a lengthy one as it saw its initial origins in the very first labor movements of the 19th century. With the development of the Labor Relations Board under the New Deal era of the 1930's, organized labor saw its power solidified in the United States β
Discovering science thorough the media
At an annual meeting of the American astronomical society in Washington scientists assumed that on these planets there are oceans of water and the atmosphere, thus, the existing of organic life on these planets also can be assumed. By means of the telescope scientists came to the conclusion that about 22% of stars in the β
Lab report example
If the mass of the book is doubles, the velocity is decreased since the impulse from the car remains constant. Again the average velocity of the car is recorded.
The process of developing and designing products
The process of developing and designing products has taken a sharp change in the last couple of years. The Success of modern day companies is due to help from a resource that has been present since the early days of the company.
Laser beam condensation
However, these natural processes are controversial in that experts question the quality of the rain formed and the side effects of the processes. In the article there is also the issue on the specified amount of water particles produced.
Us coking coal specifications.pdf
4 Semifusinite Micrinite Fusinite Mineral Matter Total Inerts 9.7 3.2 6.7 7.0 26.6 0. 75 26.81 7.39 1.70 1.03 0.56 2.59 1.33 0.37 1.
“the light beginsβ¦the light ends”
Carotene is the most soluble of the pigments and as a result will be carried the farthest by the solvent. Using the formula Rf one can determine the relationship between the distances the solvent traveled to the distance the pigment traveled Materials and Methods for LAB 1: Materials: In the first lab they used filter β
April 8, 2012
April 8, 2012 Dear Senator Greg Ball, The current practice of hydraulic fracturing began in America in the late 1990' s and has been wreaking havoc on the land and the lives of the American people since. In case you are unaware, fracking is the process well diggers use to extract natural gas and oil β
Effect of carbon chain on equilidruim and rate constants of esterification
The reaction rate of the reaction plays an important role in the production of the ester which could affect the production of the ester. Thus, the research topic of this investigation is: How does the carbon chain length of the alcohols and carboxylic acids affect the rate constants of the forward and backward reactions and β
Space exploration- good or bad
According to the majority of our readers, space travel is not beneficial to humanity and the main reasons include the safety, environmental issues as well as the cost. Safety is one of the main reasons why space travel is not beneficial to humanity.
Modern methods of organic synthesis
Therefore, it is not acceptable to expect the compound to react through substitution reactions as these reactions are not typical for ketones. The compound reacts with Grignard reagent giving magnesium alkoxide which then yields the tertiary alcohol when water is added to it.
Synthesis and estimation of gelation ability of c3- symmetry tris-urea compounds
The gel of the acetone for C3- symmetry tris urea LMWG, was changed into a solution that is homogenous by the addition of anions and re- gelated by the addition of a Lewis- acid. Thus, the urea moiety was fixed on the part of the hydrogen- bonding where it is also combined with the aromatic β
The silicon rubber review
The method followed for the preparation of hybrids were given in the supporting information. 5 mm was used for the dielectric measurement.
Basic titrating skills and techniques in order to titrate hcl
Titration is the process of measuring the exact volume of a solution of known concentration that is required to react completely with a measured volume of a solution of unknown concentration or a known mass of unknown solid. Standardization is a laboratory process in which the exact concentration of a solution is obtained by comparing β
The iodine clock reaction
Determining the rate constant and the rate law for the iodine-clock reaction: We know [S2O82-] and [I-], because we know initial volume and concentration of each solution and the final volume for each solution, e.g for [S2O82-] in trial 1: [S2O82-] = / = 0. 1 [ S O2 ' ] d [ I2 ] β
The catalytic decomposition of hydrogen peroxide essay sample
Therefore both increasing the concentration of the Hydrogen peroxide and increasing the surface area of the catalyst open to collision may increase the number of collisions between Hydrogen peroxide molecules and the catalyst therefore increasing the rate of catalytic decomposition. This is because the increased chance of collisions with the catalyst, due to the increased β
Date: 8th october, 2012
25 cm3 Volume of water = 5 1. As it was a semi-quantitative test the exact concentration of solution could not be obtained.
Sources of arsenic in soil
A variety of As compounds, each organic and inorganic, square measure introduced into the setting through earth science and anthropogenic sources.little amounts of As conjointly enter the soil and water through numerous biological sources that square measure wealthy in As. Though the anthropogenic supply of As contamination is progressively turning into vital, it ought to β
Experiment 2: common-ion effect and buffers
DATA, RESULTS AND DISCUSSION In the first part of the experiment the experimenters used visual indicators and pH meter to know the pH of each solution. The experimenters dropped the indicators in the solution and the color of the solution immediately changes.
Hydrogen peroxide essay sample
This is because, when increasing the surface area of the potatoes it will increase the rate of reaction because there will be more surface area on which particles from the potato and the Hydrogen Peroxide will collide on, and with more surface area there would be more particles carrying kinetic energy, and by carrying more β
Using carbon fibre reinforced polymer
Car bodies made of CFRP technology will endure high and low temperature fluctuations without expanding or contracting in contrast to those made of traditional metallic components such as aluminium or steel. Carney uses Ferrari as a case study of the trouble with CFRP technology when compared to traditional metallic materials such as aluminium alloys.
The united states pharmacopeial convention
The enforcing of USPs drug standards in the United States is by the administration of food and drugs. The founding of United States Pharmacopeial Convention in 1820, by a group that comprises 11 physicians that are responsible in organizing the need that is essential for a nation's dictionary of names of drug and formulas in β
Summary and poems
Poem on reduction and oxidation Electrochemistry the back bone of electrolysis, Forms the basis of our car batteries, Our dry cell and fuel cell fall the truck, Oxidation and reduction is the foundation of our chemistry. The knowledge facilitates our daily activities, Apparatus under the subject are comprehensible, Tutors and instructors have an easy time β
Factors affect the rate of the decomposition of hydrogen peroxide essay sample
Therefore the lower the concentration of hydrogen peroxide, the lower the rate that hydrogen peroxide and manganese oxide decompose. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 8.6 9.2 8.9 7.2 7.1 7.2 4.5 4.5 4.5 2.5 2.6 2.
Chemistry in the development of synthetic gemstones
The diamond seller DeBeers is long known to have a monopoly over the sale and distribution of diamonds across the whole world. It is also known that DeBeers has large stockpiles of diamonds that they withhold from the market so that the price stays high, and so that the public still sees the diamond as β
Chemical compound
The severity of exposure to this compound is evident in its symptomatic respiratory challenge, headache, and irritation of the skin. It is worth to note that as part of the health guide and prevailing risk of exposure to some chemical compounds, the article is significant.
The effect of substrate on the rate of respiration on yeast essay sample
The height of the area filled with gas was measured, after thirty minutes the test tube containing the cofactor MgSO4 revealed the higher amount of carbon dioxide evolved, which is one of the products of cellular respiration. In the second experiment, Smith fermentation tube method was used to test " If the nature of substrates β
Chemistry for dummies
Knowing this pattern is useful in many aspects of chemistry, including predicting the bonding situation of a particular atom and in the prediction of the geometry of a covalent compound. 01 * kilo- = 1, 000 The Basic Chemistry of Acids and Bases A lot of chemistry requires you to understand the difference between acids β
Negative effects of chemicals in commercial powdered-pigment for paint
80% children and individuals who uses materials that is oblivious of the risks and labels is dominant that counts around 80% than the individual who is fully attentive about the materials that they are using. In fact, one of the toxics that can be found in an inorganic pigment is called white lead or flake β
Isolation of aspirin
Once the aspirin is prepared, it is isolated from the reaction solution and then it is purified. The aspirin is insoluble in cold water, and it is isolated by filtering the chilled reaction solution.
Comprehensive and detailed chemistry notes essay sample
MUCH OF THE WORK OF CHEMISTS INVOLVES MONITORING THE REACTANTS AND PRODUCTS OF REACTIONS AND MANAGING REACTION CONDITIONS * outline the role of a chemist employed in a named industry or enterprise, identifying the branch of chemistry undertaken by the chemist and explaining a chemical principle that the chemist uses * identify the need for β
Chemical reactions
Add 5 to 10 drops of potassium iodide solution to the test tube and record your observations of the reaction.3. Next, test for hydrogen and oxygen gas produced at each end of the tube.5.
About effect of salt on rusting
The chemistry is relatively simple, rust is Solubilised by the acid and citrate ion coordinates to the iron-forming soluble iron citrate. The chemistry is relatively simple, rust is Solubilised by the acid and citrate ion coordinates to the iron-forming soluble iron citrate.
Bleaching of crude palm oil
It is operated at the temperature of 200 C for about 1-2 hours until hexane is totally removed. The oil that retained on flat bottom flask is weighted for determination of the collected oil.
Will restricting u.s. carbon emissions damage the u.s. economy? essay sample
With the decrease in forests and continuation of the burning of fossil fuels, earth's biological processes cannot convert and replenish the carbon at the rate that carbon dioxide is accumulating. The goal is to reduce carbon emissions to a level that is sustainable and also causes a decrease in the rate of climate change.
The quality of tap water sample – lab report example
What do you feel is the quality of your water sample? The values obtained for the different parameters of the water samples fall within the ranges set for clean water.
Chemical substances fungicides
Mode of action The fact that fungicides can control a wide range of fungi elicit the question of how this happens, some of the advanced reasons as to how the fungicides work include the following; there are specific fungicides that impairs synthesis of the genetic material in fungi thus avoiding synthesis of major fungi constituents β
Benefits of organic powdered-pigment used for paint
Moreover, root and tuber crops which is the family of purple yam has a lot of benefits to human health. Purple yam is proven to be versatile and composed of different health benefits as we are looking forward to create pigment from this vegetable that actually possess important roles.
Cracking and crude oil essay sample
Explain the use of crude oil as a source of both aliphatic and aromatic hydrocarbons Crude oil: a complex mixture of hydrocarbons found in layers of rock beneath the earth's surface Aliphatic Hydrocarbons: contain chains of carbon atoms that may be branched Aromatic Hydrocarbons: contain Benzene rings- rings of carbon atoms with delocalized electrons Alkanes β
A cycle is a biological pathway or process in which the end product of one cycle becomes the starting point for the next cycles: write an essay about cycles.
Photophosphorylation occurs during this reaction which is the making of ADP plus an inorganic phosphate to make ATP. This reaction is shown in the form of the Calvin cycle.* CO2 enters the stroma from the light-dependent reaction, and produces 2 3-carbon glycerate-3-phosphate.* 2 ATP molecules then donate 2 phosphate molecules to produce ADP.
Physical chemistry formal report essay sample
This is limited in the availability of the reagents to be used in each test, the samples to be tested and the substitution of chemicals restricted to use in the experiment that student could be able to verify experimentally. And to determine the presence of phosphate, molybdate test is used test to detect the presence β
Respiratory system
The blood is circulated by the heart, which pumps the oxygenated blood from the lungs to the body. What happens to the partial pressure of carbon dioxide in the blood during rapid breathing?
Energy wedges – lab report example
From the 15 strategies in the Wedge Table we chose one wedge strategy at a time to fill the 8 spots on the wedge game-board, V. Using a combination of strategies will be needed to build the 7 wedges of the stabilization triangle.
Determination of kf for naphthalene
To determine the Kf for naphthalene, we need to find the difference in the freezing point of pure naphthalene and the solution of 1, 4-dichlorobenzene in naphthalene. What is the molality of the solute? msolute= molality of solute = moles of solute/kg solvent moles of solute = 1.
Hazardous properties of chemical substances
The first property is that polymeric materials are stiff because they are constituted of very high mechanical features to their density. This is because they are organic materials and further, cellular materials constructed of the flammable matrix such as polymeric foams, are more susceptible to fire than their equivalent concrete materials as a result of β
Determination of zinc and nickel concentration essay sample
In the second method, the unknown was analyzed through the atomic absorption spectroscopy of the mixture. The 30 mL sample was transferred to the top of the column.
Renewable energy source
Solar energy is the transformation of light from the sun into power either by photovoltaics, or ultimately using focused solar. The development of affordable, endless and clean solar energy technological innovation will have huge longer-term benefits.
Ap bio lab report
In this experiment, the amount of oxygen taken up by the organism is investigated, and how this uptake is affected by the temperature and the time of the lifecycle that an organism is in. The amount of oxygen consumed was calculated by the amount of water that enters the pipette of the respirometer and the β
History of alchemy
The Stone was a red colored material capable of transforming metals like iron into silver and gold." Discovering the principals of the Philosopher's Stone was one of the defining and at the same time seemingly unobtainable objectives of Western alchemy".. Today, alchemy is largely a forgotten art but many of the techniques and terms coined β
Oos-deviation assignment detecting the presence of diethylene glycol in toothpaste by thin layer chromotography
Consequently, the thin layer chromatography acquires the role of the screening procedure during the process. The reading of DEG varies from 0.
Mercury effect on seed germination
MERCURY EFFECT ON GERMINATION AND GROWTH OF Capsicum annuum SEEDS NURSHAHIDA BINTI OSMAN BACHELOR OFSCIENCETECHNOLOGYAND PLANTATION MANAGEMENT FACULTY OF PLANTATION AND AGROTECHNOLOGY UNIVERSITI TEKNOLOGI MARA JULY 2012 MERCURY EFFECT ON GERMINATION AND GROWTH OF Capsicum annuum SEEDS NURSHAHIDA BINTI OSMAN Final Year Project Report Submitted In Partial Fulfillment of the Requirements for the Degree of β
The effect of different isotopes on atomic mass (chemistry lab)
Find the mass of each cup of beans and subtract the mass of the cup. To find the average atomic mass of beanium, use the following formula: percent of balckium atoms average mass of blackium percent of brownium atoms average mass of brownium +percent of whitium atoms average mass of whitium atomic mass of beanium β
Primary and secondary standard solutions in chemistry essay sample
The same goes with the pipette when filling it with analyte, which was the acetic acid; if the pipette is not rinsed with the analyte after being rinsed with distilled water, the analyte will become slightly diluted and it will mean that a little more sodium hydroxide will be introduced and it will increase the β
My first day at school
I have? been out of school for years and all I was concerned about was not wasting any more time without a high education; I knew it that without a college degree the chances of being successful out the are very slim to none. I remember walking to class looking at students face and just β
Determining the empirical formula of magnesium oxide essay sample
In the Lab Determining the Empirical Formula of Magnesium Oxide, students set out to find if there is a true 1: 1 ratio in the empirical formula of MgO. The formula for Magnesium Oxide is Mg _1 O _1, a 1: 1 ratio of Magnesium to Oxygen.
Factors to consider for the design and development of emulsion
EMULSION is the process of dispersing the mixure of two or more immiscible liquids while EMULSIONS is the mixture of the immiscible liquids wherein the first liquid is suspended to the second liquid. The ultimate goal of emulsion is to know and understand the main factors of dispersion of the mixture.
Bubble lab
In addition to this, a larger quantity of salt and sugar could be added in order to make the changes more drastic and easier to see. Then, a straw would be dipped in the solution and blown through in order to make bubbles.
On radiation
There are two basic types of radiation, namely the ionizing radiation and the nonionizing radiation. Examples of electromagnetic radiation are x rays and gamma radiation whereas examples of particulate radiation are alpha radiation and beta radiation.
Notes on aryl halides
Chemical tests: Test Reagent Br2/CCl4 KMnO4 AgNO3 Result Metallation Reactions for aryl halides without reactive groups Grignard Reaction: IR Spectroscopy C-X absorptions lie in the fingerprint region? not useful for analysis 1000 1350 cm-1 C F str. 500 680 cm-1 C Br str.
Lysol as household product
If the consumer thinks Lysol will prevent H1N1 the more Lysol will be sold. Lysol has been around for a long time, but so have the others.
Aspirin
Aspirin Aspirin Aspirin is one of the major and oldest pain killers used in the medical science. Acetyl salicylic acid is the chemical name of Aspirin and C9H8O4 is the chemical formula of aspirin.
Abstract. have played an significant role in
Contrary to the popular belief that turmeric to be used only in household or as a medicine, we found an entirely different dimension to the whole idea of its activity. Curcumin, a major constituent isolated from turmeric is found to be active as catalyst for coupling reactions when complexed with palladium acetate.
ο»Ώloren inc. essay sample
Brent has been appointed raw material buyer, reporting to the manager of chemicals buying group, and the hexonic acid contract will need to be approved by his immediate supervisor and the director of department. Brent thinks that, the demand for hexonic acid has eased, and there has been excess hexonic acid inventories, and Brent thought β
The established threshold for hazardous material
According to the EPA, " the current thresholds for Sections 311 and 312 are stipulated: for extremely hazardous substances: 500 pounds or the threshold planning quantity, whichever is lower; and for all other hazardous chemicals: 10, 000 pounds". This means that a person would be affected when exposed to 500 pounds of extremely hazardous materials β
To calculate the percentage composition of the mixture of na2co3 + nahco3 essay sample
001g Mass of the crucible + mixture + 0. 002g After Heating, Mass of the crucible + 0.
Analysis of an antacid
29 g 25 mL 0 mL 18 mL 0. 221 g 25 mL 0 mL 17 mL 0.
Kristina matthews
The phosphorus cycle is the soil minerals." The most serious human intrusion into the phosphorus cycle comes from the use of phosphorus containing fertilizers". Nitrogen is an element in the air." Human involvement in the nitrogen cycle is substantial.
Element that undergoes radioactive decay
The 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 considered ischemic or short of the flow of blood, β
Spectroscopic study of cu(ii) complexes: crystal field theory essay sample
These colors are due to the absorption and subsequent emission of light in the visible part of the spectrum. The Broken line represents the spectrum of TiCl63-, with a maximum at 13, 000 cm-1 The size of E is most readily measured spectrochemically by observing the energy of the electronic transitions between the t2g and β
The use of molecularly designed materials: peptide amphiphiles (pa) and elastin-like proteins (elps)
These PA molecules are charged and the end result are nanofibers and bioactive gels that can mimic the extracellular matrix. In order to test the functionality of PA, these materials were tested in rats.
Determining an equilibrium constant essay sample
57 Volume of HCl added /cm3 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5. 53 Volume of ethyl ethanoate added /cm3 5.0 5.0 4.0 4.0 2.0 2.
Chemistry in everyday life
10) Anaerobic fermentation is also a great concept which is present in the chemistry of everyday life. 11) The food chain present in every ecosystem is also a major part of chemistry in everyday life.
Conservative vs. non-conservative amino acid substitutions
The occurrence of mutations may cause malfunctioning of the protein. There are different mutations that affect the functioning of the gene in different ways.
Ap bio lab
Part B of this lab involves differing variables of light and carbon dioxide and the effects they have on the rate of photosynthesis. Part A: Plant Pigments and Chromatography Observations: The plant produced five visible bands of color: dark green, light green, green, light yellow and dark yellow.
Applied chemistry: rbst and chlorpyrifos in food
In relation to the commonly used food chemicals, this study aims to closely examine the nature of rBST and the chemical composition of Chlorpyrifos. About rBST As a type of artificifical growth hormone, the rBST is actually a kind of peptide hormone that is normally produced the the pituary gland of a cow.rBST can be β
Gas law
The independent variable is temperature whereas the dependent variable is pressure From equation y= 0. Plotting the values of pressure against the inverse of the volume gives us Boyles law that states that at constant temperature the pressure of the gas is inversely proportional to the size.
Effects on humans and environment by acid rain
Effects of acid rain on the environment and human health Acid rain refers to rain whose water is acidic and it results from acidic gases such as sulfur dioxide and oxides of nitrogen. Acid rain also affects people and the environment through the soil from which our food is grown.
Thin layer chromatography
The method used to separate the components was Thin Layer Chromatography with silica adsorbent as the stationary phase and 0. The results of the lab showed that the unknown tablet had an Rf value of 0.
Investigatory project essay sample
The objective of the first part of the study was to find the best ratio of ink using carbon from used batteries and charcoal as pigments. The carbon paper was evaluated on the basis of clarity, neatness of the print and general acceptability.
Examine the reasons why some sociologists choose not to use experiments when conducting research
Field experiments are an experiment carried out in a ' natural' setting; that is, unlike in the case of laboratory experiments, the setting is not created by the researcher. So sociologists will usually avoid experiments because of the practical, ethical and theoretical issues.
Nagtatrabahong mag-aaral essay sample
In there, the water is sun-heated and gets split into hydrogen, oxygen and ATP. Dark Reaction After the hydrogen gets to the other part of the leaf, the CO2, that we breath out, mixes with the hydrogen and gets fused using ATP, making sugar/starch he raw materials are carbon dioxide and water; the process of β
Food chemistry options report
It is up to the food chemists to design the most efficient and fastest way to make and preserve both the appeal as well as the nutrition of the food. As the discussion of food fat and oils continues, it is important to distinguish that the difference between the two is that a " fat" β
Exp
1 of the crude product was then placed aside for later TLC analysis. For the TLC analysis, solutions were prepared of benzophenone, crude diphenylmethanol, and recrystallised diphenylmethanol, by dissolving 0.
Chemistry
Chemical Properties * Chemical Property- the ability of a substance to change and form new substances.* Chemical Reactivity- With water, oxygen, acids, or another pure substance.* Combustibility- the ability of a substance to burn in air * Stability- the ability of a substance to remain unchanged.* Toxicity- the ability of a substance to cause harmful β
Group ii metals essay sample
Aim To find out the properties and trends of Group II elements using Magnesium, Calcium and Barium to investigate reactions of the metals with water, the reaction of the oxides with water and acid, the solubility's of the hydroxides and carbonates and the thermal stabilities of the carbonates. The universal indicator was used to measure β