experimental % of copper (Cu) in a post 1982 cent? In this lab‚ we will determine the % composition of a modern (post-1982) penny by using a strong acid called nitric acid (HNO3)‚ to react and dissolve the zinc core‚ leaving only the copper coating. Once only copper remains‚ we will then compare its’ absorbency to the other five post-1982 penny Cu concentrations made in this lab. INTRODUCTION: Before 1982 the US penny was made of pure copper. Because of the high cost of copper‚ the US government
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Introduction: The purpose of this experiment is to study a set of metals and their reactions reactions using different metals in an ordered activity series‚ the goal is to find the relative reactivity of them.Discovering why metals react with certain cations and solutions is the main point of this lab. This has many real life applications. When creating buildings‚ or bridges it is important to understand and counter-act the rusting of iron. You can do that by using the activity series. For any industry
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interactions have been captured through a group of correspondence called the Amarna Letters. Found in the ancient city Akhetaten‚ the Amarna Letters feature direct contact between Pharaoh Akhenaten and other leaders. According to archeologists‚ Alashiya‚ a copper rich civilization found in the letters‚ likely refers to an elite urban center in Cyprus (Priscila). At the time‚ Cyprus‚ divided into multiple elite sites‚ heavily imported exotic artifacts by exporting the resources procured by other secondary
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is the major producer of copper concentrates. It was the oldest mining company‚ the largest gold and chromite producer and one of the largest copper producers in the Philippines. Smelted Weaknesses Benguet Corporation production was expected to decline steadily which results a negative impact to Mitsubishi Metal Corporation. The Letter of Instruction (LOI) ensures the Philippine Associated Smelting and Refining Corporation (PASAR) an adequate supply of copper concentrates from all local
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chopped his body up. The ghost told Pedro that he buried the three bags of coins by a tree in his courtyard. They went out and Pedro started digging. He found the first bag‚ a bag of silver coins‚ next‚ a bag of copper‚ then lastly‚ a bag of gold coins. The ghost told Pedro to give the copper to
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SOLIDS: Mass‚ Volume and Density Measurements A. Overview Review Sections 1.4 - 1.6 in your textbook (Chemistry: The Central Science‚ 9th Ed. ‚ Brown‚ LeMay‚ Bursten‚ & Burdge) This experiment will introduce you to a very important concept in science‚ especially chemistry: DENSITY. Density is the relationship between the mass of an object and the volume which it occupies. Solid substances generally have the greatest density‚ normally in the range of 1 - 25 g/cm3. Most liquids have densities between
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lead‚ nickel‚ mercury‚ molybdenum and niobium are plentiful. The industry scale expands rapidly as the production volume of non-ferrous metals maintains rapid growth in recent years. The total production volume of the 10 major non-ferrous metals (copper‚ aluminum‚ lead‚ zinc‚ nickel‚ tin‚ stibium‚ magnesium‚ titanium and mercury) was 40‚287‚816 tons in China in 2013‚ up by 9.91% YOY. Major production regions of non-ferrous metals are Henan‚ Gansu‚ Hunan‚ Yunnan and Shandong. The production volume
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CHEMISTRY WORKSHEET TOPIC: METALS AND NON-METALS GRADE:8 Note: Revise the symbols and valency of metals and non-metals. Q1.What would you observe when you put a) Some zinc pieces into blue copper sulphate solution? b) Some copper pieces into green ferrous sulphate solution? c) An iron nail into blue copper sulphate solution? Q2.Complete and balance the following equations: a) Zn + O2 b) Pb + O2 c) Cu + O2 d) Mg + H2O e) Al + HCl f) MgO + H2O g) K2O + H2O h) Cu + HCl __________________ _____________________________
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collection and processing Qualitative observation Before * Blue solution of copper sulfate * Grey zinc powder During * Blue color solution changes to greyish black * Heat is given out‚ so the surroundings become hotter. After * Grey powder remains on the sides of the cup * Precipitate formed at the bottom of the cup List of chemicals and apparatus used Chemicals used Copper sulfate solution‚ 1 mol dm-3 25g of zinc powder Apparatus needed Pipette‚ 25ml
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Investigatory Project In Science & Technology IV (Potato Battery) Submitted by : Eloisa Umali Chelsea Jayne D. Diaz Pia Angela Valencia Acknowledgement The researchers would like to acknowledge with sincerest gratitude the following persons for the support they gave to them in the accomplishment of this investigatory project. Mrs. Rosie Castillo‚ who guide us and helped us in making this project. Who gave us the opportunity
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