Potatoes May Power The Batteries Of The Future Friday‚ June 18‚ 2010 - by Ray Willington Oh‚ batteries. Can’t live with ’em‚ can’t live without ’em. It sounds like a power ballad‚ but it’s the story of our lives around here. We’ve been dealing with lofty promises and batteries that kick the bucket far too early‚ for years now. And the fact that we’re still dealing with lead-acid batteries is sort of a baffling thing to wrap one’s mind around. But all of that just might be changing. We won’t get
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Determination of Iron by Reaction with Permanganate-A Redox Titration Purpose: The purpose of this experiment was to find the percentage of iron in an unknown iron oxide sample which could be determined through titration with a standard solution of potassium permanganate. Success in this analysis requires careful preparation and attention to detail. Performing this experiment also provides practice at titrations. The overall reaction is: 8H+(aq) + MnO4-(aq) + 5e- Mn2+(aq) + 4H2O Theory:
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ELECTRODEPOSITED NI-BASED NANOCOMPOSITES ELECTRODEPOSITION • Electroplating is often also called "electrodeposition“. • It’s a process using electrical current to reduce cations of a desired material from a solution and coat that material as a thin film onto a conductive substrate surface. • The overall process is also known as electrolysis. OBJECTIVE • To apply thin films of material to the surface of an object to change its external properties such as to increase corrosion protection
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The statue of Liberty first arrived in America in 1886 and took up permanent residency on Bedloe’s island in New York Harbor. The statue weighs in at 280 tons and is visible for more than 42 miles on a clear day. The statue of Liberty is without a doubt‚ among the most monumental figures in American history. The Statue of Liberty is made of an aluminum scaffolding‚ an iron framework and metal skin made from copper. Originally‚ she was to be made of bronze‚ but weight problems required a switch to
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STK 1084 Inorganic Chemistry I‚ LU 3 Oxidation – Reduction Reactions‚ Prepared By: Dr. Tay Meng Guan‚ Faculty of Resource Science and Technology‚ Universiti Malaysia Sarawak. LU 3 Oxidation and Reduction Reactions 3.1 Ideas of Oxidation and Reduction Oxidation of an atom can be occurred in the following conditions: 1. Losing an electron from the orbitals. e.g.: A A+ + e- 2. Adding an electronegative element (e.g.: F‚ Cl‚ Br‚ O) to a molecule. e.g.: A + F AF 3. Losing hydrogen
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Oxidation Reduction Titrations: The Indirect Iodimetric Analysis Ascorbic Acid Unknown Number 69 I: Purpose: To determine the percent weight of Ascorbic Acid in unknown sample. This was to be done by the means of an indirect iodimetric analysis. In an iodometric analysis‚ the oxidizing agent can be determined by a different means than titrating directly with standard iodide‚ because a high concentration of I- is needed to form the I3- complex. In this type of analysis‚ excess iodide is added to
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The Identification and Production of Materials 1. Fossil fuels provide both energy and raw materials such as ethylene‚ for the production of other substances. Students Learn To: .2 Identify the industrial source of ethylene from the cracking of some of the fractions from the refining of petroleum. • Ethylene is produced either from natural gas or crude oil‚ which are mixtures of hydrocarbons. One method involves… Cracking: a process by which hydrocarbons with higher molecular
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The main purpose of this experiment was to utilize the principles of cyclic voltammetry to determine technique accuracy in calculating the actual concentration of an acetaminophen elixir. Five standard solutions of acetaminophen and an acid buffer solution were created and analyzed with a potentiostat to determine the peak anodic voltage and current during the scanning process. Three solutions of Tylenol®—containing acetaminophen—and acid buffer were then created and scanned at the same scan rate
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Name: Serene Tan Subject: Chemistry SL Date: 5th December 2012 Title: The effect of concentration of electrolyte on the potential difference in voltaic cell. Aim: To investigate the effect of concentration of electrolyte of the potential difference in voltaic cell. Introduction: Chemical reactions involving the transfer of electrons from one reactant to another are called oxidation-reduction reactions or redox reactions. In a redox reaction‚ two half-reactions occur; one reactant gives
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_____________________________CORRTECH CATHODIC PROTECTION FOR PORT FACILITIES _____________________________CORRTECH Contents • • • • • • What causes corrosion What is CP and how does it work? Galvanic vs. impressed current Electrolytes (or where can I use CP) Marine applications Condition assessments _____________________________CORRTECH What is Corrosion? Corrosion is defined as the degradation of a material due to a reaction with it’s environment. Metals require energy to process
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