Science POTATO BATTERY: THE ADVENT OF TECHNOLOGY TABLE OF CONTENTS RESEARCH……………………………………………………………………...I PURPOSE……………………………………………………………….….……II DISCUSSION………………………………………………………………...…IV MATERIALS AND PROCEDURES……………………………………….......V RESULTS…………………………………………………………………....….VI CONCLUSION……………………………………………………….….….…VII BIBLIOGRPAHY……………………………………………………….….……VIII RESEARCH The potato is a starchy‚ tuberous crop from the perennial Solanum tuberosum of the Solanaceae
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favorite because it helps demonstrate how the galvanic cells that make up a car battery work. Some batteries use galvanic cells to transfer chemical energy into electric energy. They depend on two metals‚ a cathode or positive terminal (such as copper) and an anode or negative terminal (such as zinc). These are placed in an electrically conductive solution that allows ions to travel freely between the two metals. The solution is typically an acid. Car batteries use sulfuric acid‚ but potatoes contain
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acid is frequently used as a demonstration because it occurs naturally in citrus fruits. The two metals often used are zinc‚ as in a galvanized nail‚ for the anode and copper‚ as in a penny‚ for the cathode. A lemon can be used as both the container and the source of citric acid. If a slit is made in one end of the lemon‚ the penny can be inserted about half-way. A galvanized nail is pushed into the lemon close to the other end. This is not a battery that will power anything useful‚ but a sensitive
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The fourth age the age of affluence otherwise known as generation X or the baby boomer generation. The baby boomer name came from the fact that almost exactly nine months after World War II more babes where born than ever before. Approximately 3.4 million babies where born in 1946 20 percent more than the previous year‚ the trend continued through 1947 with 3.8 million babies. The trend continued until 1964 when the trend finally lost steam and by that time just over 76 million babies where born
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IHOP was not always a multinational conglomerate. It is now one of the nations leading sit down‚ cheap restraint chains. With over 1‚000 locations world wide it is a commonly known restraint. As of recent IHOP has had a 52-week high of 39.4 and a low of 27.04. Recently‚ IHOP rang the bell of the NYSE in celebration of the kick-off of the National Pancake Day (March 4) and the launch of a brand rejuvenation strategy for IHOP‚ which celebrates its 45th year in business this July. In honor of the occasion
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Essential Trace ElementsAnthony L. JacksonBIO/350October 20‚ 2014Michelle GrayEssential Trace ElementsEveryone has their own beliefs on how the Earth was formed‚ and people can argue about it for hours or even days‚ but there is one thing that everyone can agree on is that all organisms are composed of matter. Matter is anything thing that takes up space. All organisms need some element to make them produce and to live healthy lives. There are two types of elements the essential and trace element
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best. Add just enough water but not too much. I guess if the dirt dries up‚ you’ll have to water the batteries along with the rest of the plants. The soda can version works but I haven’t tested extensively. You don’t really have to use a penny‚ just has to be copper. Perhaps other common materials would work better. Each cell gives you a useless 0.5 volts. But if you link them in series you can get more. I was able to light up an LED decently with 4 cells. Not quite as bright as Alkalines‚ but you
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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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will be taken to prevent HAIs is installing copper‚ bronze‚ and brass fixtures throughout the hospital that are the most touched and used surfaces such as toilet seats‚ door knobs and handles‚ and bedside rails. Installing these materials will help to kill pathogens and MRSA that are responsible for Hospital and Community Acquired Infections. The use of brass and bronze will increase the potential of killing harmful and potentially deadly bacteria. Copper has been recognized by the EPA as the first
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Chemists often deal with percent problems. As long as you remember that percent refers to per 100‚ these problems can be solved. 1. A penny minted after 1982 is composed of copper and zinc only. If a penny has a mass of 2.507 g and is 2.50 % copper. What is the mass of zinc in the coin? (5 pts) 2.507 g x 2.50/100 = 0.062675 g of Cu 2.507 g of penny - 0.062675 g of Cu = 2.444325 g = 2.444 g of Zn (2.44 g of Zn is correct also) D. Density is a very important concept for chemist. The density
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