Materials: A large potato Two pennies Two zinc-plated nails or screws Three pieces of copper wire A very small light bulb or LED light 1) Get a potato and cut it in half. Then make a small slit in each half just big enough to put a penny into. 2) Cut two pieces of copper wire and wrap one around one of the pennies a few times‚ and wrap the other one around the other penny a few times as well. 3) Take a third piece of copper wire‚ and wrap it around one of the
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Experiment 8 Determination of Percent Composition of Pennies Using Redox and Double Displacement (Precipitation) Reactions Objectives: The lab experiment will consist of oxidation-reduction and double displacement reactions as well as titration techniques. All these components will be used in order to determine the percent composition of pennies. In conducting redox and double displacement we are able to analyze a penny and figure out the chemical composition of the product. The experiment
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Tiffany Yuen Investigation 21: How Much Copper Is in the Coin? RC Bauer‚ JP Birk‚ DJ Sawyer We calibrated three different molarities of copper (II) nitrate. We tested for the %Transmittance of 1M‚ 0.1M‚ and 0.01M and plotted the data collected on a calibration curve based on concentration and absorbance. We used nitric acid to dissolve a penny to produce another copper (II) nitrate to test its %Transmittance and plot that on the graph to discover the concentration of that substance which came
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STATEMENT OF THE PROBLEM Main Problem: How can the ionization chamber detect if the environment is surrounded or has Radon? Sub- Problems: What are the primary sources of radon gas? What elements are found when radon decays? How can this gas cause different kinds of diseases? OBJECTIVE: Build a simple ionization chamber that is capable of detecting fairly low levels of radiation BACKGROUND OF THE STUDY Radon is a cancer-causing gas. It comes from the natural breakdown of uranium in soil
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easy. Batteries consist of two different metals suspended in an acidic solution. Copper and Zinc work well as the metals and the citric acid content of a lemon will provide the acidic solution. Batteries like this will not be able to run a motor or energize most light bulbs. It is possible to produce a dim glow from an LED. The picture at the top of this page shows a basic lemon battery‚ a lemon‚ copper penny and zinc coated nail. The lemon: A large‚ fresh‚ "juicy" lemon works best. The
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non-consumable anode such as lead. In these techniques‚ ions of the metal to be plated must be periodically replenished in the bath as they are drawn out of the solution.[2] The most common form of electroplating is used for creating coins such as pennies‚ which are small zinc plates
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Make a Carrot Battery This activity uses a common carrot and two different metals to make a enough electricity to run a small digital clock. Materials: Two Large Raw Carrots; 2 Pennies; 2 Large Galvanized Nails; 3 pieces of 6" long wire; Small Digital Clock (Tandy (Radio Shack) or Maplin - "Stick-on Timer" £3.50/ $4.99. The digital clock can be extracted from an inexpensive alarm clock or it can be purchased from an electronics store. Slice of about 1 inch from each carrot and discard. Place
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Composition of Pennies Using Oxidation-Reduction and Double Displacement (Precipitation) Reactions Questions to answer to help guide the development of procedures for the determination of the percent copper and zinc in pennies through titration and gravimetric techniques: 1. What is the weight of a post 1982 penny? 2. What is the percent copper and zinc in a post 1982 penny? 3. How many grams of copper and zinc are in a post 1982 penny? 4. How many moles of copper and zinc
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Trials 2‚ 3‚ and 4. In Exercise 1‚ you will determine the density of a solid of regular geometric shape‚ and identify the composition of the solid by comparing the density with reported values. In Exercise 2‚ you will determine the density of pennies by water displacement. B. Procedures Exercise 1. Density of A Regular Solid Apparatus: Electronic balances‚ beakers‚ regular-shaped solids‚ vernier calipers Safety Equipment: aprons‚ goggles Chemicals: None Objectives: In this
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Pre Lab Experiment 8 DETERMINATION OF % COMPOSITION OF PENNIES USING REDOX AND DOUBLE DISPLACEMENT (PRECIPITATION) REACTIONS Objectives: 1. Learn how to determinate the percent composition 2. Learn how to get the percent using oxidation reduction and double reactions 3. To become more familiar with the use titration techniques 4. To learn how to get the salt out of an quimical Background: To develop and utilize procedures to determine the percent composition‚ of ZnCI2. As well titrating
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