“The Chemical Engineer – His Role in Electrical Manufacturing” by N. R. Maleady The article is about the role of chemical engineer in manufacturing transformers in the electrical manufacturing sector. The important components of the transformer are copper wire, cellulosic insulation, insulating varnish and dielectric …
Introduction The purple pink solution of potassium permanganate (MnO4 -) is reduced by glucose to a colourless solution of manganese ions (Mn2+). MnO4- + 8H+ + 5e- Mn2+ + 4H2O The time taken for the loss of colour from a standardised solution of permanganate is …
Bubble-ology Introduction Everybody loves bubbles! But what makes bubbles form, and float up in the air until they pop? A soap bubble The secret to a good bubble is something called surface tension, an invisible bond that holds water molecules together. Water is a polar …
Air pollution has been and is a growing environmental problem that is closely related to the growth of urban settlements. While the cities and towns of the world grow larger they emit more and more toxic emissions are put out into the air. The purpose …
Toxicology is defined as that branch of science dealing with poisons. According to Hodgson (2010), a “poison can be defined as any substance that causes a harmful effect when administered, either by accident or by design, to a living organism” (p. 3). Toxicology also includes …
BroIn this experiment of the relative rates of free-radical chain bromination, we were expected to be able to determine the relative reactivates of the many types of hydrogen atoms involved toward bromine atoms. Bromination is defined to be a regioselective reaction meaning bromine has preference …
Chromatography is a separation technique in which the mixture to be separated is dissolved in a solvent and the resulting solution, often called the mobile phase, is then passed through or over another material, the stationary phase. The separation of the original mixture depends on …
DEFINITION OF HEAT TRANSFER| Heat transfer is energy in transit due to temperature difference . Whenever there exists a temperature difference in a medium or between media, heat transfer must occur. The basic requirement for heat transfer is the presence of temperature difference . There …
The objective of the experiment was to determine if different factors affect the reaction rate of Alka-Seltzer. Alka-Seltzer provides fast relief to acid indigestion, upset stomach, heartburn, headaches, body aches and pains. It is an antacid and pain relief medicine used by millions of consumer’s …
Dating techniques are procedures used by scientists to determine the age of a specimen. 2 types of Dating: *Relative Dating *Absolute Dating Relative Dating -methods tell only if one sample is older or younger than another sample. -They do not provide an age in years. …
Blast furnace is a continuous unit of shaft-type. The charging of burden is conducted from above, through the typical charging unit, which is the gas damper of the blast furnace. It is reduced rich iron ore (at present time resources of rich iron ore are …
According to statistics of recorded crimes in California, seventy five percent are women who are killed by an intimate partner. Moreover, more than eighty percent was being abused by a spouse or a boyfriend (CPEDV, 2007). Domestic or intimate partner violence has been a major …
Title: Finding the Ratio of Mole of Reactants in a Chemical Reaction Purpose of Lab: To find the coefficients of two chemical reactants that appears in a balanced chemical equation using the continuous variations method. Pre Lab Questions: 2AgNO3(aq) + K2CrO4(aq) > 2KNO3(aq) + Ag2CrO4(s) …
Exercise 1: Cell Transport Mechanisms and Permeability: Activity 1: Simulating Dialysis (Simple Diffusion) Lab Report Pre-lab Quiz Results You scored 75% by answering 3 out of 4 questions correctly. 1. The driving force for diffusion is Your answer : c. the membrane transport protein. Correct …
The discussion tap water vs. bottled water has very strong opinionated sides. One side believes that tap water is the better choice and is better for the environment and health of the general populace, while the other side of the populace argues that bottled water …
The University of Lethbridge Department of Chemistry & Biochemistry Chemistry 2740 Laboratory Experiment 2 A KINETIC STUDY OF THE BASE CATALYZED CLEAVAGE OF DIACETONE ALCOHOL USING A DILATOMETER The decomposition of diacetone alcohol into two molecules of acetone is catalyzed by hydroxide ions and is …
” Champion aren’t made In the gyms. Champions are made from something they have Inside them – a desire, a dream, a vision” (Muhammad All). Sports are the basic of everything that a person learns in his/her childhood. There is no known date or time …
Maria Sklodowska was Marie Curie’s birth name. She was born in a family of middle class. Both of her parents have been instructors at Warsaw during the Russian occupation. After being a participant of a certain revolutionary act when she was in her teenage years, …
Chemical Aspects of Life and Spit Lab Formal Report 1. Abstract The objective of the Reducing Sugar Test was to test if the substance has a reducing sugar in it by adding Benedict’s solution and heating it, there would be a color change if a …
Introduction Living organisms have been classified by humans according to several different characteristics, one of them being the manner in which they obtain nutritive organic molecules (1), in other words, their food. Plants are denominated as autotrophs, organisms that can produce their own food from …
Cherno Okafor Aida Stefani SBI4U Octover 20th, 2012 Assignment 1: Cellular Biology furthers technology-Enzymes in the Dairy Industry Since ancient times, enzymes have played an important role in food production. Especially in the diary industry, some enzymes are required for the production of cheese, yogurt, …
Abstract LDPE and HDPE were processed by extrusion, injection molding, and sheet extrusion. Their mechanical properties such as tensile strength and percent elongation were measured by tensile test and analyzed statistically (Table 2). During the extrusion process, both polymers underwent die swelling. The water cooled …
Tutorial 1: Atomic Structure and Bonding in Solids 1. (a)Cite the difference between atomic mass and atomic weight. (b)Silicon has three naturally-occurring isotopes as shown in the table below. On the basis of this data, confirm that the average atomic weight of Si is 28. …
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. Purification is essential to remove any unreacted salicylic acid and acetic …
Experiment In this experiment a high vacuum sublimation was performed to determine the vapor pressure and finally the enthalpy of sublimation of Vanillin and o-Vanillin. AKnudsen cell with sample was weighed 10 times maybe just say weighed by difference, they don’t usually like it when …
In order to cut downing fuel ingestion and run into the emanation criterions, many betterments has been made. The illustrations of the betterments are combustion schemes, fuel injection system, exhaust emanation and fuel quality. There are four possible beginnings of atmospheric pollution from the car. …
Since the active site for all molecules of one enzyme will be made up of the same arrangement of amino acids, It has a highly specific shape. Generally, there is only one active site on each enzyme molecule and only one type of substrate molecule …
Leo Tran IB Chemistry SL II R5 Ms. Crane January 4, 2012 Restoring Balance LAB Pre-Lab Questions 1. The solubility of iodine increases because the position of equilibrium has shifted towards the triiodide side of the reaction. Addition of the reactants causes an increase in …
Objective To determine and compare the amount of calcium carbonate content of brown and white eggshells. Materials white and brown eggshells, water, deionized water, beaker, pipet, flask, test tube brush, funnel, hotplate, mortar, pestle, ethanol, HCl, phenolphthalein indicator, sodium hydroxide Procedure (Complete for both white …
On the first experiment, they use a pepper-like substance called Potassium Permanganate (KMn04) which is an oxidant and an oil-like substance called Brake Fluid which is a fuel. When they combined these two substances in a stainless container, this results on having a little fire …
Conjugation
The word "conjugation" is derived from a Latin word that means "to link together". In organic chemistry terms, it is used to describe the situation that occurs when π systems (e.g. double bonds) are "linked together". An "isolated" π (pi) system exists only between a single pair of adjacent atoms (e.g. C=C)
Kinetic energy
Kinetic energy is the energy associated with objects in motion. Potential energy is the type of energy associated with an object's potential to do work. Chemical energy is the type of energy released from the breakdown of chemical bonds and can be harnessed for metabolic processes.
Physics
Chemical physics is concerned with the application of the concepts and theories of physics to the analysis of chemical systems and their physical behaviour. While also at the interface between physics and chemistry, it is distinct from physical chemistry.
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