Chemistry essays
Last update: September 19, 2015-
Chemistry Anailide
The first step was the acetlation of aniline. 4.0ml of aniline was dissolved in 10 ml of acetic acid in a 100ml round bottomed flask. 5 ml of acetic anhyhydride was then added to the soultion and was mixed well by swirling. Care was taken when handling the flas as it was exothermic and became warm. Two boiling chips were then added to the flask and it was attached to the condensing column. The hoses
Rating:Essay Length: 867 Words / 4 PagesSubmitted: April 13, 2011 -
Chemistry Lab Report
EXPLAIN: In chemistry, the whole class learned about double displacement reactions. In the lab, each team had to randomly pick two compounds and to later mix it together. We used a tube that was empty because some tubes may be contaminated, which make the compound could not react. My team and I picked to compounds to mix together in an empty tube as directed. We were given a kit so that we could form precipitates.
Rating:Essay Length: 418 Words / 2 PagesSubmitted: May 26, 2011 -
The Importance of Chemistry in Daily Life
The Importance of Chemistry in Daily Life Most people have chosen to write their essay about how chemistry has played an important role in everyday life. I have chosen to ask, how doesn't it play a role in everyday life? The simple fact is that chemistry plays an important role in every person's daily activities from the moment we're born. So what role does chemistry really play in everyday life? Well, this involvement usually begins
Rating:Essay Length: 349 Words / 2 PagesSubmitted: June 28, 2011 -
Chemistry
rates of reaction Sodium Thiosulphate + Hydrochloric Acid Na2S2O3 (aq) + 2HCl (aq) Sodium Chloride + Water + Sulphur Dioxide + Sulphur 2NaCl (aq) + H2O (l) + SO2 (g) + S (s) Fair Test To make this experiment a fair test, we need to make sure we do a number of things. In this experiment we are trying to find the rate of reaction using concentration as a factor, so there is a number
Rating:Essay Length: 418 Words / 2 PagesSubmitted: July 5, 2011 -
Green Chemistry - Usa
Green chemistry is defined as the reduction of the usage of chemical products for a better future The economic prosperity of the United States demands that it continue to have a robust chemical industry. In this age of environmental consciousness, however, we can no longer afford to allow the type of industry that has been characteristic of past practices to continue operating as it always has. There is a real need to develop an environmentally
Rating:Essay Length: 368 Words / 2 PagesSubmitted: July 11, 2011 -
Organic Chemistry
Into a 3-ml conical vial, 3.80mmol of benzophenone was dissolved in 2.0ml of anhydrous ethyl ether . When the reaction cooled, after the ether stops boiling, the septum cap was removed, and a dry stir bar was dropped into the reaction flask and the cap was replaced afterwards. The stirrer was started. A syringe was used to add about three drops of benzophenone solution at a rate sufficient to keep the reaction mixture boiling gently
Rating:Essay Length: 422 Words / 2 PagesSubmitted: July 11, 2011 -
Chemistry Magic Show
CHEMISTRY MAGIC SHOW Chemistry is in the entire world. The entire world is in chemistry. What is chemistry? Chemistry is the study of composition of Matter and its properties. Can we study about this bench top? This may not be interesting because there may not be much change. Chemistry means changes that will be interesting. Even Human body is an example of living chemical organisms. It is a composition of water and cells, which contain
Rating:Essay Length: 2,635 Words / 11 PagesSubmitted: July 21, 2011 -
Chemistry Trans Fats
Introduction: Regular eating of fast food can have a detrimental effect on your bodily health due to the high amount of sugar, fat, sodium and empty calories that they contain. Most of the fat in the food we eat is a mixture of three main types - saturated, polyunsaturated and monounsaturated. Fatty acids have the general formula of CnH2n+1COOH . Trans-fats is the common name for unsaturated fat with trans-isomer fatty acids, they may be
Rating:Essay Length: 298 Words / 2 PagesSubmitted: July 23, 2011 -
Chemistry Problems
CHEM B GIFTED FINAL EXAM REVIEW- Problems 6. Calculate the percent yield of water if 345g are produced when the theoretical yield was 547 g. 7. Calculate the pH corresponding to each of the hydrogen ion concentrations given below. Tell whether the solution is acidic, basic, or neutral a. [H+]= .00100 M c. [H+] = 9.18 x 10-11 M b. [H+] = 2.19 x 10-4 M d. [H+] = 4.71 x 10-7 M 8. Calculate
Rating:Essay Length: 922 Words / 4 PagesSubmitted: August 3, 2011 -
Production, Chemistry and Nuclear Properties of the Heaviest Elements
chemistry of the heaviest elements is explored. Molecular-level structural information is essential to understand actinide interaction in environmental solutions, with minerals, soil microbes and at interfaces of these components. Our research interests focus on two main areas: (1) the production, nuclear properties, and chemistry and of the heaviest elements and (2) fundamental research on the environmental behavior of non-radioactive and radioactive metal ions, with emphasis on actinides. I. Production, Chemistry and Nuclear properties of the
Rating:Essay Length: 645 Words / 3 PagesSubmitted: August 14, 2011 -
Nasa Chemistry
Global mean land-ocean temperature change from 1880-2010, relative to the 1951-1980 mean. The black line is the annual mean and the red line is the 5-year running mean. The green bars show uncertainty estimates. Source: NASA GISS The map shows the 10-year average (2000-2009) global mean temperature anomaly relative to the 1951-1980 mean. The largest temperature increases are in the Arctic and the Antarctic Peninsula. Source: NASA Earth Observatory [1] Fossil fuel related CO2 emissions
Rating:Essay Length: 580 Words / 3 PagesSubmitted: August 20, 2011 -
Analytical Chemistry
Analytical Chemistry Analytical Chemistry is the branch of chemistry principally concerned with determining the chemical composition of materials, which may be solids, liquids, gases, pure elements, compounds, or complex mixtures. In addition, chemical analysis can characterize materials but determining their molecular structures and measuring such physical properties as pH, color, and solubility. Wet analysis involves the studying of substances that have been submerged in a solution and microanalysis uses substances in very small amounts. Qualitative
Rating:Essay Length: 1,071 Words / 5 PagesSubmitted: September 25, 2011 -
Chemistry Case
Australia the show play written by Aidan Fennessy, performed at the MTC lawler studio was an excellent non-naturalistic play. The trio of the very talented performers brought to life the story of Australia. It was an amazing play; it had a lot of dramatic element. Captivating story plot was the reason many people enjoyed it and the presence of satire made it even better. Overall it got as good as any play could get. The
Rating:Essay Length: 626 Words / 3 PagesSubmitted: November 9, 2011 -
Chemistry Conclusion and Data
According to the data the mass of our liquid substance read 2.69 grams as it was measured on the electronic scale. The original mass of the container was 5.00 grams, then when the 10 mL of the liquid substance was added into the container the electronic scale read 7.69 grams. So, when subtracted from the two numbers, the difference or the mass of the substance results to 5.69 grams. The volume of the whole liquid
Rating:Essay Length: 434 Words / 2 PagesSubmitted: January 2, 2012 -
Synthesis and Chemistry of Alkenes
As the borate ester complex reaction proceeded in the experiment, the solution went from a bright yellow color to a light milky yellow color in the addition of sodium borohydride. When acid was added, it turned from a liquid yellow to a solid precipitate (solid ) yellow compound. It thickened as it was swirled. In comparing the IR spectrum of the 9- fluorenone and 9- fluroenol, there were disappearance and appearance of certain peaks. For
Rating:Essay Length: 325 Words / 2 PagesSubmitted: March 1, 2012 -
Synthesis and Chemistry of Alkenes
Experiment 2: SYNTHESIS AND CHEMISTRY OF ALKENES Objective: In this experiment, a mixture of different alkenes was synthesized through an acid catalyzed reaction, using simple distillation techniques. The components of the mixture were analyzed using a gas chromatogram, and various alkenes were tested for unsaturation using the bromine and Baeyer test. Reactions: Figure 1. Acid catalyzed dehydration of 4-methyl-2-pentanol Figure 2. The synthesis of major alkene products from the various carbocation shifts of the dehydrated
Rating:Essay Length: 624 Words / 3 PagesSubmitted: March 2, 2012 -
Chemistry Brochure
* Planned, organized, and directed nursing care of the patients; develops and/or oversees development of short and long term goals of the patients; monitors patient outcomes and under the direction of the physician takes actions to ensure Standards of Care are met. Managed the financial operation of the care center to meet target budgetary indicators and net earnings per patient to include: cost of goods, treatments per patient and FTE costs (i.e. labor costs per
Rating:Essay Length: 317 Words / 2 PagesSubmitted: April 9, 2012 -
Chemistry Case
Explain what is meant by "electrolysis" and describe how it takes place in an electrolytic cell. Answer: If we look at the latin roots of the word "electrolysis" we learn that it means, essentially, to "break apart" (lysis) using electricity. In chemistry and manufacturing, electrolysis is a method of using an electric current to drive an otherwise non-spontaneous chemical reaction. Electrolysis is commercially highly important as a stage in the separation of elements from naturally-occurring
Rating:Essay Length: 1,916 Words / 8 PagesSubmitted: July 11, 2012 -
Common Electrolytes & Chemistry Values
COMMON ELECTROLYTES &CHEMISTRY VALUES Parameter Normal Values Serum Electrolytes Sodium(Na) Potassium(K) Chloride(C) Carbon Dioxide (CO2) 134-145 mEq/L 4.5-6.8 mEq/L 95-110 mE/L 20-25mmol/L Serum Chemistry Blood Urea Nitrogen (BUN) Calcium (Ca) Creatinine (Cr) Glucose (G) Magnesium (Mg) Phosphorus (P) 6-30mg/dl 7.0-10 0.2-0.9 40-97 1.5-2.5 5.4-10.9 Accountability - A long word with a complex meaning September 30, 2006 As a nurse (whether currently looking after patients or not), I am accountable for my actions and omissions. I
Rating:Essay Length: 905 Words / 4 PagesSubmitted: July 20, 2012 -
Chemistry Case
Investigating the rate of reaction between Peroxodisulphate (S2O82-) and Iodide (I-) ions AIM : To find the order of reaction in the reaction between S2O82- and I- with respect to I- To find the order of the reaction with respect to I- ions, the initial rates method was adopted. Five solutions were prepared by varying the concentration of I- ions while keeping the concentration of S2O82- constant. Appropriate volume of water was added to all
Rating:Essay Length: 668 Words / 3 PagesSubmitted: August 1, 2012 -
Chemistry, Ethanol, Sorbitol, Mineral Oil, Isopropyl Alcohol, Color Pigments
Chemistry Ethanol * Ethanol is a volatile, flammable, colorless liquid. It is a psychoactive drug and one of the oldest recreational drugs. Ethanol is not all that good. Pure ethanol that is in direct contact to the body can cause irritation to the skin and eyes. If you use it for a long time, it can result in serious liver damage. Sorbitol * Sorbitol is usually found in different kinds of fruits and plants. Sorbitol
Rating:Essay Length: 314 Words / 2 PagesSubmitted: August 14, 2012 -
Chemistry Homework
Homework #1 How does a hypothesis differ from a theory? 1) A hypothesis is a reasonable and testable explanation for observations. A theory, on the other hand, is a well-tested explanation of observations. What is the scientific method? 2) The scientific method is a series of steps followed to solve problems, including collecting data, formulating a hypothesis, testing the hypothesis, and stating conclusions. Do experiments always turn out as expected? Why or why not? 3)
Rating:Essay Length: 367 Words / 2 PagesSubmitted: September 23, 2012 -
Flame Test Lab for Lachsa Chemistry Students
Activity No. 3 Flame Tests CA Standard 1j: Students know that spectral lines are the result of transitions of electrons between energy levels and that these lines correspond to photons with a frequency related to the energy spacing between levels by using Plank's relationship (E=hv). Purpose: To be able to observe the colors emitted by the metallic ions when heated or subjected to flame. Hypothesis: (make up your own) Materials: Q-tips; water; crucible tongs; Bunsen
Rating:Essay Length: 531 Words / 3 PagesSubmitted: September 25, 2012 -
Fundamental Concepts of Chemistry Affects Biology
What Is Life? BIO/101 Version 5 ________________ University of Phoenix Material What Is Life? Part I: Media Relevancy Read each statement. Write a 100-word summary explaining how the chosen media piece supports the statement. Include reference citations. 1. Find a media piece—article, video, presentation, song, or other—that recognizes the fundamental concepts of chemistry in biology. Include the link or reference citation for the piece and describe how it helped you better understand how fundamental concepts
Rating:Essay Length: 1,212 Words / 5 PagesSubmitted: October 15, 2015 -
Synthesis and Chemistry of Alkenes
Synthesis and Chemistry of Alkenes Abstract To carry out the dehydration reaction of 4-methyl-2-pentanol and analyze the alkene product by gas chromatography. Later, chemical tests of Bromine, Baeyer and chromic acid on 4-methyl-2-pentanol and the product mixture is done. Equations Procedure Reference Marrs, P. Chemistry 323 Organic Chemistry Laboratory Manual, Spring 2016, 17-22, B19 Dehydration of 4-Methyl-2-pentanol Table1: Reagents used in dehydration of 4-methyl-2-pentanol Compound MW Used Millimoles Physical and Safety Data 4-methyl-2-pentanol C6H4O 102.17
Rating:Essay Length: 752 Words / 4 PagesSubmitted: February 18, 2016