FORM 4G ELECTROLYSIS WORKSHEET TERM 3 2010-2011 1.Figure 1 below is a diagram of the apparatus used in the electrolysis of fused sodium bromide. Figure 1 a)Write the formulae for the ions present in the fused sodium bromide. b)Write an ionic equation to represent the reaction taking place at the positive and negative electrodes. c)When the heat source was removed‚ the crucible cooled and the lamp went out. Explain why the lamp went out when the crucible cooled. d)At the end of the experiment
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xa.yimg.com/kq/groups/9534928/992196434/name/1.pdf by WE GORDON - Cited by 8 - Related articles reaction of sulfamic acid with nitrites is practically instan- taneous‚ and only ... differences between the sulfamate ion and the sulfate or chloride ions (12). T. [PDF] Method 9010C - US Environmental Protection Agency www.epa.gov/osw/hazard/testmethods/sw846/pdfs/9010c.pdf the distillation‚ nitrate and nitrite will form nitrous acid‚ which will react with some organic
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maintain 14 days scale air conditioning units that still use CFC as refrigerant. These units were installed well before 1996 ban on CFC production A member of the budget committee comes to you before she is concerned about the potential cost of replacing so many units. She ask these questions. (a) Since a cooling unit is sealed why does the continued use of CFC pose any risk to the environment? (b) Can’t the
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Curium is highly radioactive. As a metal‚ it is lustrous and silvery. It is malleable‚ chemically reactive and electropositive. Its surface rapidly oxidizes in air‚ gaining a thin film. Most compounds of trivalent curium are stable and faintly yellow or yellow-green. If absorbed in to the body‚ curium accumulates in the bones. Its radiation destroys red blood cell formation. Consequently‚ curium is considered very toxic. Large quantities of curium are now easily made in nuclear reactors. A nuclear
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Public Sector Reform PHILOSOPHY FOR PUBLIC SECTOR REFORM Government’s policy for public sector reform is driven by a philosophy that makes the interest of the people of paramount concern. The human resource is the most valuable of all national resources. People‚ whether there are the employers‚ employees or customers of the public sector‚ transcend structures‚ systems‚ procedures and technology. They are the key elements to the overall success of government’s initiative in public sector reform
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Chapter 6 practice MULTIPLE CHOICE 1. The formula for acetic acid‚ CH3CO2H‚ is an example of a(n) a.|condensed formula.| b.|mathematical formula.| c.|structural formula.| d.|molecular formula.| ANS: A OBJ: Goal #3.1: Interpret‚ predict‚ and write formulas for ionic and molecular compounds 3. Which of the following statements are correct? 1.|Metals generally lose electrons to become cations.| 2.|Nonmetals generally gain electrons to become anions.| 3.|Group 2A metals
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Staff Paper The Philippine Bakery Sector A market research report by Mollie Woods and Suzanne Thornsbury Submitted as a final grant report to Jamie Zmitko-Somers‚ MDA Staff Paper 2009‐05 August 2009 Department of Agricultural‚ Food and Resource Economics MICHIGAN STATE UNIVERSITY East Lansing‚ Michigan 48824 MSU is an Affirmative Action/Equal Opportunity Employer The Philippine Bakery Sector A market research report by Mollie Woods and Suzanne Thornsbury
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INDIA’S SERVICES SECTOR: Unlocking Opportunity INDIA’S SERVICES SECTOR Unlocking Opportunity Australian Government Department of Foreign Affairs and Trade Economic Analytical Unit DFAT ©Commonwealth of Australia 2007 This work is copyright. Apart from any use permitted under the Copyright Act 1968‚ no part may be reproduced by any process without prior written permission from the Commonwealth available through the Attorney-General’s Department. Requests and inquiries concerning reproduction
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production plant attempting to synthesise n-hexane. a) List three physical properties of alkynes. b) Give the IUPAC name of compound A. [3 marks] [2 marks] c) There are several ways to form the final product from Compound A. An operator has decided to use Pt catalyst to react with Compound A. Write the complete chemical reaction equation. [3 marks] d) The quality assurance manager of the production plant found out that the method in (c) is not very efficient and has decided to look for an alternative
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TOPIC 2 Metals The History of Metals * Uses of metals through history: * Copper Age (3200-2300 BCE) – copper and tin were most common metals‚ and were used for ornaments‚ weapons and tools. * Bronze Age (2300-700 BCE) – copper‚ tin and bronze were used for tools‚ weapons and transport. They produced bronze by heating copper and tin with charcoal. * Iron Age (1000 BCE – 1 CE) – iron steel and lead was used for tools‚ weapons and pipes. Iron is much harder than bronze.
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