Elemental Copper from Copper (II) Nitrate Objectives: Students should be able to… recognize evidence(s) of a chemical change convert word equations into formula equations perform a series of chemical reactions in order to recycle the element copper determine the percent recovery of elemental copper Challenge: How good and accurate a chemist are you? Given a solution of Cu(NO3)2‚ what percentage of elemental copper can you recover from the original solution? Materials: 1 M copper (II)
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Sociology Pre-release 2012 Using the pre-release material and your wider sociological knowledge‚ explain and evaluate the use of qualitative methods (ethnography/ semi-structured interviews/ observation) to research the values of young working class males. Within Nayak’s study he used ethnographic methods such as observation and semi-structured interviews. The aim of ethnographic research is to get close to the people being studied so that the researcher can experience the social world in the same
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A COMPARISON OF ALUMINUM VS. COPPER AS USED IN ELECTRICAL EQUIPMENT Larry Pryor‚ P.E. – Sr. Specification Engineer‚ GE Consumer & Industrial Rick Schlobohm‚ P.E. – Sr. Specification Engineer‚ GE Consumer & Industrial Bill Brownell‚ P.E – Specification Engineer‚ GE Consumer & Industrial ABSTRACT The debate over the pros and cons of aluminum vs. copper conductors has been discussed for many years. Many of the concerns are based on old information and also misinformation. These concerns center on the
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in the market than the copper cables. These cables are widely used in offices or residential areas. Copper cables transmit information through electrical signals. It has been used as a speaker system wire‚ telephone wire‚ computer cable wire etc. for over years now. Optical fiber comprises of plastic or glass strands to transmit data or information digitally with the use of light rather than electricity. On the other hand‚ copper cable encompasses of a single thread of copper. The size of the cable
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Experiment 1: Synthesis of Copper Compounds Introduction This experiment involves the synthesis of compounds originating from pure solid copper. By applying solubility rules and the reactive properties of substances‚ many compounds which would otherwise be costly to extract from nature are able to be synthesized in the laboratory. Laboratory synthesized may sometimes be more economical than natural extraction‚ however it poses its own problems with the amount of substance that is actually yielded
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out how to use it if I don ’t have one." The iPad weighs in at about 1.5 pounds and has a 9.7 inch screen. It currently connects to the internet solely via Wi-fi but later in April‚ there are plans to release a version that allows users to connect via AT&T’s 3g network. The iPad already has an extensive application availability and works similar to the iPhone and iPod touch‚ only with a lack of calling capability. The iPad is about 3 times the size of an iPhone and is still smaller than competing
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Copper Kettle Catering Case 1. The operations of Copper Kettle Catering’s delivery-only category is conductive to the application of lean concepts and practices because the Williams’ can efficiently manage the deliver-only process by minimizing excess inventory‚ unnecessary activities‚ movement and material handling. These factors will help to enhance service quality‚ flexibility‚ reliability and improve customer satisfaction. If Copper Kettle Catering has the resources to purchase automated
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Prepared for Dr Serkan Saydam Mine 8150 Mine Design and Feasability Major Assignment Prepared by David G Rolph 3309524 Thursday‚ 8 September 2011 [pic] Summary Huntley and Avondale Collieries are existing underground mines in the Illawarra coal fields of New South Wales. Both mines are on care and maintenance at present but with an improved financial outlook‚ the existing infrastructure and the location of the mines in relation existing coal mining infrastructure
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mine | SCANLAN & CENTRALIA NO. 5 | A PUBLIC ADMINSTRATION CRITIQUE | | C Blue | | Strayer University PAD 500 – Modern Public Administration Professor W. Roberts January 23‚ 2012 Illinois was divided into five inspection districts and a Board of Examiners for Mine Inspectors was created in 1883. This State Mining Board as it was later called supervised inspections of Illinois mines. Illinois created the Department of Mines and Minerals in 1917 to take over the mining regulatory
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Identification of a Copper Compound by Percent Mass Unknown Compound: #9 Abstract: The objective of this experiment was to identify the unknown pure copper salt compound of #9. To do this‚ the mass of copper in the unknown was calculated and then divided by the mass of the whole compound to get the percent copper. The molecular weight was also calculated by dividing mass of copper compound used by moles of compound in unknown sample. The percent copper averaged out to 31.6% while the molecular
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