In Reaction 1‚ the mass of the pre-cut copper wire was measured with watch glass on the analytical balance‚ the mass was recorded using as many significant figures as possible on Table 2. The copper wire was bended into a circle and laid flat on the bottom of the 250 mL beaker. Inside the fume hood‚ 4mL 16M of HNO3 was added into the 250mL beaker that contained the copper wire. The copper wire was completely dissolved by swirling the beaker. The observation was recorded in Table 3. For Reaction 2
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Copper was the first metal that is used by humans as weapons and tools. It is shinny and has a reddish brown color. It’s application toward humans has really changed the way we live. Copper is an excellent conductor of electricity‚ which is often used as electrical wires or cables in generators‚ motors and electric products. In addition‚ it is also an outstanding conductor of heat‚ which is used in radiators and heating systems. Since it does not react with water and corrode easily‚ it is widely
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Copper vs Fiber Some advantages of Copper Cabling are Power over Ethernet this gives you the ability to power phones‚ surveillance cameras‚ Wireless Access Points‚ and many other devices right through the networking cable itself. That means that you don’t have to schedule an electrician in to run power to your surveillance cameras to power them. Another advantage is the ability to have an emergency power supply that will continue powering mission critical devices even if your electricity goes
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mass of copper wire was 1.250g but the recovered copper was only 0.120 subtracting the mass of the recovered copper with beaker from the tare beaker mass. So the percentage yield resulted only to 9.6% it is very little‚ and it may be due to many possible sources from doing the steps. Adding too much or too little of a compound to the copper solution‚or the loss of copper during transport or by being left on the stirring rod. Another situation which was a source of error is when the copper solution
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CH 130 B: General Chemistry I The Lab Report As a scientist you are responsible for conveying the results of an experiment to a supervisor‚ a colleague‚ or the public. Often‚ you will convey this information in the form of a scientific paper describing your work. This paper needs to clearly describe why and how an experiment was done‚ and it must include an interpretation of results‚ including a discussion of their importance and any significant sources of error. You lab report will
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Chilean Copper Mine Name XBCOM/275 May 18‚2014 Dr Jose A. Cotay Chilean Copper Mine On August 5‚ 2010 there was one of the worst mining disasters in the history of mining. In the Atacama Deseret one of the largest mines there was a clasp. On this day 33 miners were unaccounted for after they did a head count of all the miners that come out the dust and dirt. The company was not sure if they were alive or dead. The community that these men lived in was grief stricken and their families were
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Experiment 3 A Cycle of Copper Reactions Chemistry Department UCC 1st Year Practicals Introduction n n n n n Copper is one of the most important metals. Copper is reddish with a bright metallic lustre It is malleable‚ ductile‚ and a good conductor of heat and electricity (second only to silver in electrical conductivity) Its alloys‚ brass and bronze‚ are very important Has various oxidation states: 0 in elemental copper‚ +1‚ and +2 which is observable in corroded
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The discovery of copper does not have an exact date. Copper is said to be a prehistoric element. This element was said to be first discovered around 8000BC. The ancient civilizations started to take the copper out of the ore they found around 4000BC. This is when copper started to be put to good use. Early civilizations discovered that copper is malleable and is sharp. They realized they could make copper into tools and weapons. This was easier than the stone that they were originally using. This
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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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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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