Potassium Potassium‚ also known by the symbol “K”‚ has an atomic number of 19 and an atomic mass of 39.0983. The atomic number of 19 implies that it contains 19 protons‚ 19 electrons‚ and 19 neutrons. It is found in Group 1‚ the alkali metals‚ and the fourth family on the periodic table. Because it is located in group one‚ it is one of the most highly reactive and electropositive metals and is a base. Potassium is a solid‚ silvery white metal at 298 Kelvin‚ and has a melting point of 336.53 Kelvin;
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Experiments 4A-C: Synthesis and Component Analysis of an Iron (III) Oxalate Complex My Name TA‚ Section B## Work Performed on 10/23‚ 10/30‚ & 11/4‚ 200# Report due Tuesday‚ November ##‚ 200# 1. Abstract This experiment initially involved the synthesis of an iron (III) oxalate complex with the general formula Kw[Fex(C2O4)y]·zH2O. The variables x‚ y‚ and z were determined through the duration of the entire experiment. From 1.2000g of Fe(NH4)2(SO4)2 were synthesized 1.1###g of K3[FeIII(C2O4)3]·3H2O
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Lethal injection is the practice of injecting a person with a fatal dose of drugs (typically abarbiturate‚ paralytic‚ and potassium solution) for the express purpose of causing the immediate death of the subject. The main application for this procedure is capital punishment‚ but the term may also be applied in a broad sense to euthanasia and suicide. It kills the person by first putting the person to sleep‚ and then stopping the breathing and heart‚ respectively. In 1970’s the people used Intravenous
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Potassium is a major electrolyte that helps the body maintain fluid balance and action potentials. It does this by moving in and out of the body’s cells with the help of the sodium-potassium pump‚ an active transport system than moves potassium against its concentration gradient. This is what gives cells their membrane potential. In acidosis‚ there is a high concentration of hydrogen ions in the extracellular fluid‚ this promotes an influx of Hydrogen ions into the cells. As the electro positive
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The Composition of Potassium Chlorate Objectives The objectives of this laboratory are: a) To experimentally determine the mass percent of oxygen in the compound potassium chlorate (KClO3) via the thermal decomposition of a sample of potassium chlorate. b) To qualitatively demonstrate that the residue resulting from the decomposition of potassium chlorate is potassium chloride. Background All compounds consist of elements chemically combined in fixed proportions – they obey the Law of Constant
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5. POTASSIUM PERMANGANATE Potassium permanganate (KMnO4) is used primarily to control taste and odors‚ remove color‚ control biological growth in treatment plants‚ and remove iron and manganese. In a secondary role‚ potassium permanganate may be useful in controlling the formation of THMs and other DBPs by oxidizing precursors and reducing the demand for other disinfectants (Hazen and Sawyer‚ 1992). The mechanism of reduced DBPs may be as simple as moving the point of chlorine application further
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According to Elson (2000)‚ potassium is one of the most common prescribed minerals. This mineral is crucial to cardiovascular and nerve functions. When potassium is low fatigue is the most common symptom. The early symptoms include muscle weakness‚ slow reflexes‚ and dry skin or acne; these initial problems may progress to nervous disorders‚ insomnia‚ slow or irregular heartbeat‚ and loss of gastrointestinal tone. A sudden loss of potassium may lead to cardiac arrhythmia. Low potassium may impair glucose
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Synthesis and Analysis of the Coordination Compound Pentaaminechlorideocobalt (III) Chloride Heaven Lin and Forest Lin W.M. Keck Science Department‚ Claremont McKenna‚ Pitzer‚ and Scripps Colleges 925 N. Mills Avenue‚ Claremont‚ California 91711 Abstract Through using the spectrometer and titrations‚ the amount of the coordination compound‚ pentaaminechloridocobalt (III) chloride‚ was determined through a synthesis through an oxidation reduction of cobalt (II) chloride hexahydrate (CoCl2·6H2O)
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Potassium Hydroxide (KOH) Introduction Potassium hydroxide is an inorganic compound with the formula KOH‚ commonly called caustic potash. Along with sodium hydroxide (NaOH)‚ this colorless solid is a prototypical strong base. It has many industrial and niche applications. Most applications exploit its reactivity toward acids and its corrosive nature. In 2005‚ an estimated 700‚000 to 800‚000 tonnes were produced. Approximately 100 times more NaOH than KOH is produced annually. KOH is noteworthy
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Page 1 of 15 CEBU CPAR CENTER Mandaue City‚ Cebu AUDITING THEORY AUDITING IN A COMPUTER INFORMATION SYSTEMS (CIS) ENVIRONMENT Related PSAs/PAPSs: PSA 401; PAPS 1001‚ 1002‚ 1003‚ 1008 and 1009 PSA 401 – Auditing in a Computer Information Systems (CIS) Environment 1. Which statement is incorrect when auditing in a CIS environment? a. A CIS environment exists when a computer of any type or size is involved in the processing by the entity of financial information of significance to the audit
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