| 1. | Inorganic Synthesis Preparation of Sodium Thiosulfate Pentahydrate
Chem Lab U211
Li Yan
27 November 2003
Introduction
The purpose of this lab was to prepare an important substance, sodium thiosulfate pentahydrate, which has many uses both in chemistry lab and in everyday life. Sodium thiosulfate pentahydrate is prepared by dissolving powdered elemental sul...
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| 2. | Sodium
The element we decided to tell you about was sodium. ... The element sodium is a soft, silver-colored metal, waxlike at room temperature but breakable as the temperature falls. ... Sodium is a member of the alkali metals, a family that includes lithium, potassium, rubidium, cesium, and francium....
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| 3. | SN2 Substitution in a Polar, Aprotic Solvent:Preparation of an Ester
SN2 Substitution in a Polar, Aprotic Solvent: Preparation of an Ester Introduction My goal in this experiment was not only to synthesize an ester, it was also to better familiarize myself with lab techniques and SN2 reactions. I was working with sodium acetate and ester Z to synthesis my product. Re...
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| 4. | Protien synthesis
Protein Synthesis
The first step of protein synthesis is to copy DNA information where the information is then transferred out of the nucleus into the cytoplasm were ribosomes are translated. This whole process synthesis a strand of mRNA by transferring particular sequences of DNA template called...
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| 5. | Essense of Kant
-The process of synthesis is Kant’s attempt to explain how we as individuals know experience as a succession of perceptions. Kant takes this as a given, we DO experience successions of perceptions, and therefore we need to explain how this occurs.
I will examine Kant’s notion of synthesis, and h...
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| 6. | biolab
ANALYSIS OF HOW INHIBITORY COMPOUNDS, ENZYME AND SUBSTRATE CONCENTRATION, pH, AND TEMPERATURE AFFECT THE REACTION RATE OF THE ENZYME ALKALINE PHOSPHATASE Abstract It is hypothesized that sodium molybdate, inorganic phosphate, and phenyl phosphonate are inhibitory compounds of the enzyme alkaline pho...
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| 7. | chemistry
Leonardo Camoriano
General Chemistry
Sept 10, 2003
Chapter 2
56. ...
Leonardo Camoriano
General Chemistry
Sept 17, 2003
Chapter 3
53. ...
Leonardo Camoriano
General Chemistry
Sept 22, 2003
Chapter 3
71. ... Write formulas for the compo...
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| 8. | who are babies made
Samantha Feeney 9f Planning I am trying to find out if changing the concentration of Sodium Thiosulphate affects how fast the solution blots out a cross (X). This is a list of equipment I will be using: Sodium Thiosulphate Hydrochloric Acid Measuring Cylinder Beaker Stopwatch Ruler Flask This is the...
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| 9. | Chlorine
My name is Chlorine and my abbreviation is Cl. ... Scheele thought that what he had found in his experiment was Oxygen, but in actuality it was me, Chlorine. ... The amount of chlorine in the atmosphere is very low but can also be very destructive to the atmosphere. I can be purified, or obtained...
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| 10. | synthese sonore
Isn't the SOUND SYNTHESIS To create a sound of any share, to reach freedom? (in this moment, I make in the lyric intros) Même if the sampling is already very creative, the ultimate control of its music passes by the synthesis. Indeed, certain sounds used usually can be only synthetic (tablecloths o...
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| 11. | What Happens to the Rate of Reaction if you change Concentration
Plan
I plan to create a piece coursework investigating the rates of reaction, between sodium Thiosulphate and Hydrochloric acid. The rate of a reaction is the speed at which the reaction takes place and is not how much of a product is made, but is how quickly a reaction happens. We measure the r...
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| 12. | Prepartion of the body
PREPARATION OF THE BODY
I. ... Mummifying (embalming and drying of the body) was discovered to keep corpses from decaying over the long years
a. ... Placed body in natron (A mineral of hydrous sodium carbonate, often found crystallized with other salts)
c. The body was then wrapped in...
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| 13. | saponification
INTODUCTION: Soup making might be the second eldest chemical reaction known. Soup is a product of the saponification, which is hydrolysis of esters in the presence of strong soluble bases, of fats with sodium hydroxide or lye. The lye hydrolyses the fat (esters) into glycerol and sodium salts of the...
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| 14. | Rates of Reaction
Aim : We did 4 experiments to find out how the rate of reaction changes with differing concentrations of Sodium Thiosulphate, Hydrochloric Acid and water. ...
Sodium Thio-sulphate (cm3) Water (cm3) Hydrochloric Acid (cm3) Graph number
20 0 3 DPPAS_02
15 5 3 DPPAS_03
10 10 3 DPPAS_04
5 15 3 DPP...
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| 15. | effects of temp on catalase
Investigation into the effects of temperature on the reaction between hydrochloric acid and sodium thiosulphate to produce sodium chloride, sulphur, sulphur dioxide and water
Aim
The aim of this experiment is to find out what effect temperature has on the reaction between the two chemicals hy...
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| 16. | Aim
Aim: To neutralize sodium hydroxide using hydrochloric acid. Method: A one cm strip of litmus paper was placed into a test tube and then sodium was added into the test tube to depth of 1 cm. Hydrochloric acid was added into the test tube drop by drop until the first permanent colour of the litmus pa...
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| 17. | poop
Persuasion Speech By: Rob Williams I. Introduction A. A boy was playing soccer out on a field in the middle of the summer. It’s around 95-102 degrees outside. He and the rest of his team have been out playing for about 2 hours. The teams coach has told them over and over to stay hydrated!! Drink ple...
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| 18. | effect of temperature on particles
GCSE SCIENCE COURSEWORK
The Effect of temperature on particles
Aim:
To investigate the effect of temperature on reactions.
Prediction:
My prediction is that, the hotter the temperature gets the quicker the reaction will be.
Scientific Explanation :
The explanation for my prediction is ...
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| 19. | Nerve Action Potentials
Nerve Action Potentials and Sensory Physiology
Lab Report
Question #1
Calculate the potassium equilibrium potential for [K]o = 5mM and for [K]o = 12. ... Compare these equilibrium potentials with the membrane potential in the simulations. ... Compare these equilibrium potentials with the me...
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| 20. | Translation and Protein Synthesis
The process of protein synthesis is vital in organisms, and the release of different types of polypeptides from ribosomes all over the body links genotype to phenotype in the resulting organism. The individual types of RNA (ribonucleic acid) each play their own very important role in going from DNA...
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| 21. | Describe how an action potential is propagated along a nerve fibre What factors govern the speed
Action potentials are responsible for the majority of the distinct features that are witnessed in nerve fibres, such as the uses of temporal and spatial summation and the phenomenon of ‘all or nothing’ from which this spurs. It is therefore of upmost importance that we understand both the process of...
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| 22. | electrolytes
Electrolytes are essential to our body’s function. We need to replenish our body’s electrolytes. What are electrolytes? Sodium (a major electrolyte) where it is found and what it does, the causes of dehydration and the uses of sports drinks all will help one to understand why we need electrolytes...
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| 23. | asprin
ASPIRIN Since 400BC physicians prescribed aspirin in its unrefined state to alleviate pain. Aspirin originated from the leaves and bark of the willow tree, rich in salicin, natural compound similar to acetylsalicylic acid, and the chemical name for aspirin. The story of aspirin is well documented by...
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| 24. | Informative Synthesis on Group Think
Informative Synthesis on group think
There are many reasons that people are unlikely to stand out against the will of a group. Some may feel as though they will not gain the acceptance of the group and thus will be excommunicated and in the end leaving a feeling of being desolate. ... We...
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| 25. | Biology
2.1 euk. Life begins-larger and more complex that prokaryotic cells 1.2 billion years ago multi-cellular euk. Evolved-single cell organisms continued to flourish-multi-cellular organisms opened up new possibilities Synthesis of monomers-an inevitable consequence of early conditions-little O2-lighten...
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| 26. | Determining the Molarity of Citric Acid by Titration
Abstract
The concentration of citric acid (C6H8O7) present in food, as an additive was determined experimentally by titration. The source of citric acid for the experiment was Adirondack orange soda. Using an acid-base titration apparatus sodium hydroxide was added to the orange soda in the pre...
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| 27. | Respiration Essay (1995 #3)
Energy transfer occurs in all cellular activities. Three such processes are - Synthesis of molecules - Chemiosmosis - Fermentation For the 3 processes above involving energy transfer a) Explain the function of each in the cell b) Give an example of each c) Tell how ATP is involved in each example Sy...
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| 28. | lithium
...
A prominent effect of lithium on the nervous system can be found in the field of medicine. ... Althought its therapeutic value has been debated, there is no doubt that a number of manic patients have benefited from lithium treatment. ... The lithium ion seems to counteract the manic syptom...
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| 29. | synthesis and refelction british influence in modern day
Synthesis and reflection
British influence in modern day
When Britain colonized Antigua they made many changes, some noticeable at the time, others not. When the British left Antigua and it gained its independence in 1983, the British did not leave with everything they came with.
Ta...
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| 30. | Botany
A series of membrane bound chambers within a cell which plays an important part in the synthesis of lipids and proteins which are destined to be inserted in the cell membrane. There are two types of ER: smooth and rough. Smooth ER is the site of synthesis and digestion of fatty acids and phospholipi...
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| 31. | DNA
Cellular division is essential for body growth and tissue repair, but before a cell can divide its DNA must be replicated exactly, so that identical copies of the cell’s genes can be passed on to each of its offspring. The precise trigger for DNA synthesis is unknown, but what is known is that the d...
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| 32. | catalyst and reaction rates
Catalysts and Rates of Reaction
Pam Zehrer Lab
Date 11-4-03
Lab Partners:
Megan Spina and
Two Classmates
The Object of this lab was to have a “hands on” experience with chemical reactions. ...
Part 1 Concentration and ...
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| 33. | Redox Titration
...
Starch solution will be used as a indicator in this experiment, in which deep blue colour will be shown in the presence of iodine; however, it¡¦s added near the end of the titration when the solution is straw-coloured, because a black precipitate will be formed in the solution, in which it ca...
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| 34. | chemisty
Crystal Lab Chemistry 11 * Ms. Donnelly Vanessa Hill 1. Purpose: The Purpose of this project was to grow the largest, clearest crystal, with the fewest deformations in the time given. 2. Materials/Apparatus: • Various amounts of Potassium Sodium Tartrate • Distilled Water • 3 Petri Dishes • Small Gl...
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| 35. | to derermine the effect of concentration on a reaction rate
AIM: To determine the effect of concentration on a Reaction Rate.
METHOD: Using the reaction between Sodium Thiosulphate and dilute Hydrochloric Acid. ... The experiment is repeated using other concentration’s of Sodium Thiosulphate, which are obtained by dillution. ... ’s of Thiosulphate
solu...
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| 36. | men
Purpose: To see how much light a green plant must have. Using different amounts of light in the experiment Hypothesis: If the plant has light then it will perform photosynthesis. Materials: Test tube, 400-mL beaker, freshly cut Elodea sprig, forceps, bright light, sodium bicarbonate solution, hand l...
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| 37. | Why is table salt sold in the United States in an iodinated form (a fraction in the form of NaI instead of NaCl)? Describe the relevant physiology.
Iodine is essential for the normal function of the thyroid and synthesis of thyroid hormones: thyroxin (T4) and triiodothyronine (T3) where the 3 and 4 refer to the number of iodine molecules used for each hormone. Some of the functions of these hormones in the body are: increases basal metabolic ra...
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| 38. | The science Essay
9-16-03 Chapter 2 Inorganic and Organic compounds Without Carbon-H20, Salt, Acid, Bases Carbon-Carbohydrates, lipids, protein, sugar, DNA, ATP Inorganic I. Water-most abundant compound A. Secretes and lubricates- ex: saliva, mucous, tears B. Universal Solvent-most chemicals dissolve in H20 C. High S...
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| 39. | Biological Importance of Water
Water is essential to life itself; without water, life on earth would not exist. Water is a major component of cells, typically forming between 70 and 95% of the mass of a cell. This means that humans are made from approximately 80% water by mass and soft bodied creatures such as jellyfish are made ...
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| 40. | Worship Seminar
WORSHIP SEMINAR
DATE: 12th February 2003
VENUE: Covenant Presbyterian Church
TIME: 10 AM to 4 PM
Report by Yong Yung Ling
Well, the seminar was originally a six-month course. ...
Firstly, to be a true worship leader(WL), a person must live a lifestyle if worship. ... If the WL’s life...
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| 41. | Summarization on Test and Note Taking
The first sentence of this chapter tells about how over 25% of my college time I will be either preparing for or taking a test! ... I get awful anxieties when I am about to take or taking a test. ... By actually knowing what triggers all the test anxiety that I feel, I can now work to improve the...
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| 42. | Lives of Mike Rose
Summary and Synthesis of Mike Roses "Lives on the Boundary". ...
Summary and Synthesis of Mike Roses "Lives on the Boundary"
Carl Woodwards article in the Battalion relating to the idea that undergraduates do not care about important issues is on average totally inaccurate. "Lives on the Boun...
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| 43. | specialities of ATP
Specialities of ATP
Adenosine triphosphate
The enzyme that produces ATP is called ATP synthase, or ATPase, and this resides on the mitochondria in human cells and on the chloroplasts in plant cells.
ATP is one of nature’s natural sources of energy, kind of like wind “a renewable energy...
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| 44. | Variables
Variables Other variables which may affect the outcome of this experiment, if not kept constant, are as follows: Temperature Of Sodium Thiosulphate - I believe that the hotter the temperature, the faster the rate of reaction. This is because when a substance is heated up, each particle has more ener...
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| 45. | science rate of reactions
Studying the effect of temperature on the rate of reactions To Study the effect of temperature on the rate of reactions, I will be looking at the reaction of Sodium Thiosulphate solution and dilute Hydrochloric Acid. Chemical reactions occur when particles of a substance collide with each other. Som...
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| 46. | me
NoneArt Activity: Shinny Crab Paintings Developmental Focus: Synthesis and utilization of a child’s knowledge and abilities. Intermediate Goal: In order to progress toward this goal, the program provides children with the opportunity to combine both material and strategies to create something tangib...
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| 47. | WASTE INCINERATION
Incineration is a process that uses high temperature thermal oxidation to convert organic or inorganic waste to a less bulky, innocuous, inorganic material. ... This process greatly reduces the volume of waste involved, and in some cases, the toxicity of the waste involved, thus rendering the waste...
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| 48. | Diabetes
The treatment of type II diabetes is varied and ranges from changes in diet and exercise patterns to prescription of oral medications to regulate insulin levels. To understand what the effects of diet and exercise on the body in relation to this form of diabetes are, a brief overview of the disea...
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| 49. | Identification of mitotic chromosomes using a squash preparation and a commercial slide
This experiment was carried out with the main aim of distinguishing and categorising chromosomes into their different stages of mitosis in a garlic root tip, and also to perform a count of cell category on a commercial cell.
Methods
In order to use a light microscope to view chromosomal detail, ...
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| 50. | Preparing Case Study Analyses
The following general guidelines may be used in preparing for an oral or written case analysis and presentation.
There may be several feasible courses of action regarding the solution to any case. ...
The Process of Analyzing a Case
1. Read and study the case thoroughly and efficiently.
Read th...
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