OLD COINS TURN TO GOLD DESIGN: Problem or Research Question: How does zinc effects the color change in a copper penny? Hypothesis: If copper and zinc comes together‚ then it will form brass‚ which gives gold color to copper penny. Variables: There were no variables at this experiment PROCEDURES: Materials: Zinc (SN) filling‚ 3M NaOH solution‚ Copper penny‚ tongs‚ Hot plate‚ 100 ml beaker‚ 250 ml beaker‚ Bunsen burner‚ Water‚ Spoon. Procedure: First‚ we turned on the hot plate.
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Determination of % 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
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26.67 for each penny of the aggregate populace of the state was proficient as against 36 for each penny for the coun¬try in general. Religious Composition: Religion has been characterized as the "sentiment total reliance". Religion is an image of gathering personality and a social encouraging point. About 66 for every penny of the aggregate populace of the condition of Jammu and Kashmir comprises of Muslims and 30.41 for every penny of Hindus. Buddhists with 1.26 for every penny constitute the
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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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A great follow-up to One Foot In The Grape. Penny‚ Connor‚ her winery manager‚ her neighbor Antonia and Chantal her daughter are off to Napa Valley to look into possibly investing in railroad that will bring wine country tourist to their wineries. At first winery they stop at‚ Chantal gets into a heated argument with another possible investor‚ Tara. Shortly after taking off for the next winery on the tour‚ someone pulls the emergency cord and Penny and Connor go to try and learn what happened
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interests of such groups of people and basically such organisations are known as non-profitable. In order to better such organisation‚ their structure‚ work‚ aims‚ and their social role‚ it is necessary to analyse one of such organisations‚ namely Penny Lane in North Hills‚ Ca. History First of
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can produce‚ because the more electrons you have‚ the more electricity you will get. Batteries are expensive‚ but you can make one for exactly 24 cents! In this experiment‚ you will make your own voltaic pile using pennies and nickels. In the data‚ we will see if the number of pennies and nickels will affect the number of voltage and current. Problem How many coins in the pile will make the most electricity? Hypothesis If there are more coins‚ then the more electricity it can produce‚ because
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The penny is at rest sitting on top of the card. When you flick the card out from under the penny‚ you allow gravity (an outside force) to act on it and drop it into the glass. The bottom of the glass stops the penny from falling. However‚ if the penny had way more mass and were falling much faster‚ it could go right through the glass. So‚ why doesn’t the penny take off when the card is flicked? If you flick the card correctly‚ it simply slides out from between the glass and the penny. There’s
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Materials: -pipet -penny -distilled H2O -tap H2O -salt H2O (see step 1) -soapy H2O (see step 2) -paper towel Procedure: 1. To make salt H2O mix salt with distilled H2O 2. To make soapy H2O mix soap with distilled H2O 3. Place penny with the Lincoln side up on top of a piece of paper towel 4. Fill pipet with distilled H2O and hold it about 3 cm above the penny 5. Slowly drip the distilled H20 on the penny face and count the drips until the liquid leaks off the edge of the penny on to the paper
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Description Penny‚ a friend and indirect co-worker to the group‚ is the Systems Librarian at the Sunshine University Engineering Library. Despite being a straight-A student‚ high school valedictorian‚ and a Phi Beta Kappa‚ she is struggling with the demands and interpersonal dynamics of her first job out of college. While she feels confident in her ability to manage the tasks inherent to her job description (technical support and training for new technology)‚ she feels besieged by the expectations
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