Lime scale form when hot water is heated about 61’C. All the acids listed about remove lime scale because the ions in the acids react with the calcium ions in limescale to then form a soluble salt. The acids also react with the carbonates in lime scale to produce water and carbon dioxide. Then the whole solution washes out taking away as much lime scale and possible. Sulfamic acid The advantages of using sulfamic acid as a de-scaler are that it is the faster de-scaler which means it can give
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murdering a family? Capote wrote‚ “Then I aimed my gun. The room just exploded. Went blue. Just blazed up” (244). In Truman Capote’s “In Cold Blood‚” four shots to four heads occurred in the Clutter home in the isolated city of Holcomb‚ Kansas on November 15‚ 1959. The main characters are the Clutter family‚ and two men named Dick and Perry. Capote’s novel “In Cold Blood” illustrates the murder of a family and the case to capture the suspects‚ how mental illness/psychological states control the actions
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Did the end of the Cold War make Europe more or less secure? In the late 1940’s Europe was divided into two separate blocs. The Cold War for Europe was illustrated by the existence of two opposed camps across a divided Germany. The end of the Cold War in 1989 and the reunification of Germany in 1990 brought about a transformation in the European security environment unrecognisable from that which had existed five years earlier. The system of two militarized blocs ceased to function. The Warsaw
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Ahmed Fun Filled Hands On Science 17 January 2013 Demonstrations in Chemistry Class Chemistry is a class that a lot of college student are afraid of‚ and when I think of chemistry‚ complex equations that don’t benefit come to my mind. The reason is that all I got out of chemistry is those unbeneficial equations‚ for me at least. Also‚ I learned that H2O is water. With all those negative statements‚ I still believe that chemistry is a very important subject to understand the magic of this life and
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The Cold War Michelle Goon SS310 Exploring the 1960’s Professor: Karen Lloyd Unit 2 Assignment Date: 2-12-2012 The Cold war started in 1945 and lasted until 1991 (Timeline of the Cold War‚ n.d.). During this time the world had many political views and agendas to deal with. There was the election between Kennedy and Nixon in 1960 and the election of Kennedy into office in 1961 (Farber‚ 1994) . There were mixed views on the types of government and the battle between countries to maintain governmental
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Topic: How the Cold War began‚ ended‚ and Canada’s involvement in the Cold War. In October 1962‚ U.S. planes spotted that the USSR was installing nuclear missile bases in Cuba. These images showed that the threat of a nuclear war could be coming true‚ and the United States would be vulnerable to get attacked within minutes. The world sank into panic until the Soviet Premier agreed to dismantle the missiles. How close it was the whole world could have been set on fire and destroyed! The ideological
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Thesis : The cold war caused widespread fear in the United States that there would be a WWIII using nuclear weapons. The Cold War was a period of time from 1953 to 1990 which dealt with tensions between the Soviet Union and the United States which were the two superpowers of the world. The term was an example of the cold tensions and relationships between the USSR and The United States‚ Western Europe and many parts of the world. They had Marshall Plan which was economic and foreign policy that
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Iron Cooper Mass of metal 27.776 g 41.664 g 34.720 g 41.664 g Volume of water in calorimeter 26.0 mL 26.0 mL 26.0 mL 26.0 mL Initial temp. of water in calorimeter 25.3 degrees C 25.3 degrees C 25.3 degrees C 25.3 degree’s C Temp of hot water and the metal 100.5 degrees C 100.5 degrees C 100.5 degrees C 100.5 degrees C Final temp in the calorimeter 31.6 degrees C 34.8 degrees C 33.1 degrees C 34.5 degrees C Part II: Insert a complete data table‚ including appropriate
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Bibliography: Heyworth‚ Rex M Dr‚ and J G R Briggs. Chemistry Insights. Singapore: Pearson Education South East Asia‚ 2007 http://www.google.com http://www.ausetute.com.au/elecysis.html http://www.nmsea.org/Curriculhttp://www.nmsea.org/Curriculum/7_12/electrolysis/electrolysis.htmum/7_12/electrolysis/electrolysis
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Chemistry 200 Exam 1 Review Problems 1. Calculate the number of atoms in 10.0 grams of Fe. 2. Give the mass number‚ #protons‚ #neutrons and #electrons for the isotope strontium-88. 3. Calculate the number of moles of carbon in 50.0 g of benzene C6H6 4. A substance is found to be 38.7 % C‚ 9.7 % H and 51.6 % O by mass. Its molar mass is 62.1 g/mole. What is its molecular formula? 5. Name the following: a) Ca(OH)2 b) KCN c) HClO4(aq) d) FeSO4 e) Na2O f) SF6 g)
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