Shingala Dr. Campagnolo Chemistry H September 24‚ 2013 Lab on Density of Four Metals Conclusion In this lab we studied the densities of four different metals using a caliper‚ a digital scale‚ and a calculator. Three metals were pure elements like copper‚ iron‚ and aluminum. The fourth metal was an alloy which was brass. The purposes of this lab were to demonstrate that different metal elements have different densities‚ and that alloys have densities somewhere between those elements that compose them
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door frames‚ paneling)- Aeroplanes- Motor car parts (cylinder heads‚ radiator cores)- High voltage transmission lines- Domestic pots and pans and wrapping foil- Drink containers- Electric wiring over long distances (long distance power lines) | Copper | - Electrical wiring (household and street cables)- Pipes and plumbing fittings - Electroplating‚ jewellery and household decorations | Zinc | - Galvanizing iron (surface coating)- Protective paints and electroplating- Diecast alloys (car carburetors)
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According to the article it seems the retail store we all know as JC Penny hasn’t been doing so well as far as their sales have been going which is something the public was probably unaware of. The article stresses how well they are doing and the come up they made however are they really making a come up. By the end of the year will they meet their sales needs? The article explains. According to the article JC Penny‚ “the company is seeking to calm investors who are growing pessimistic about a turnaround
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Have you ever wondered what drove modern humans to abandon bronze for iron? In this paper I will present the reasons for and the techniques used to develop iron into a useable metal that is far superior to bronze. Topics will include‚ when iron was first used‚ the accidental discovery of steel‚ and why bronze was replaced by iron. First though‚ let us look at the origins of iron. The Iron Age began around 1200 BC‚ according to Scarre‚ in southwest Asia (2005:434). It is know however that iron
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project value addition done by financial manager. • Southport Indonesia (SI)‚ a wholly-owned subsidiary of Southport Minerals‚ entrusted with a responsibility of mining the copper ore at Firstburg‚ Indonesia. o Initial experiments established that Firstburg mine contained 33 million tons of copper ore with an average copper content of 2.5%. o Bechtel conducted the cost and feasibility studies and informed that the total development cost would be $120mil and could be operationalized by end of 1972
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Copper toxicity From Wikipedia‚ the free encyclopedia Jump to: navigation‚ search Copper toxicity | Classification and external resources | A Kayser-Fleischer ring‚ copper deposits found in the cornea‚ is an indication the body is not metabolizing copper properly. | ICD-10 | T56.4 | ICD-9 | 985.8 | MedlinePlus | 002496 | Copper toxicity refers to the consequences of an excess of copper in the body. Copper toxicity can occur from eating acid foods cooked in uncoated copper cookware
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from getting rid of extra copper. A small amount of copper obtained from food is needed to stay healthy‚ but too much copper is poisonous. In Wilson disease‚ copper builds up in the liver‚ brain‚ eyes‚ and other organs. Over time‚ high copper levels can cause life-threatening organ damage. Pathophysiology and clinical features of Wilson disease Wilson disease is an autosomal recessive inherited disorder of copper metabolism resulting in pathological accumulation of copper in many organs and tissues
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Respectively‚ in Figure 3‚ a large deviation amongst the initial and final quantity of copper‚ this implies that the rest of the mass that had diminished‚ was greater than the final product. These findings correlate to Figure 2 calculations as‚ the % yield was reasonably insignificant of 49.12%. The initial mass of Copper was‚1.598g; whereas‚ the final amount of copper was‚ 0.785g. This suggests that the 0.813 g of copper could have transitioned into Hydrogen gas‚ and therefore contradicting the hypothesis
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# Now You See It – Copper Cycle Lab The purpose of the lab is to discover what happens when someone executes a series of procedures‚ beginning with copper metal. What is done | What is observed | 1. Started with copper‚ Cu (s). | reddish‚ brownish‚ orange-ish‚ powder-like | 2. Added nitric acid‚ HNO3 (aq). | acid turns blue and smells like chlorine. | 3. Added water‚ H2O (l). | stayed the same | 4. Added sodium hydroxide‚ NaOH (aq). | changed consistency‚ gel-like | 5. Heated the
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10/24/2013 LAB TITLE: Single Replacement Reaction of Solid Copper with Silver Nitrate PURPOSE The purpose of this lab is to: • Observe a single replacement reaction‚ and • Calculate the mole ratio of silver (Ag) to copper (Cu) in the reaction MATERIALS • Copper wire (30 cm) • Large test tube • 250 ml beaker • Silver nitrate (AgNO3) powder • Dilute AgNO3 solution • Distilled water • Electronic balance
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