in grams) of potato cores placed in them overnight (approximately 10 hours)? 2. Hypothesis Alternative hypothesis: As the concentration of sodium chloride in the solution increases‚ the mass of the potato cores will decrease. If the solution they are in has a lower water potential than the potato cores‚ there will be net movement of water out of the potato cores. If the solution has a higher water potential than the potato cores‚ there will be net movement of water into the potato pieces. Therefore
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conditions of communist countries. The static number of deaths due to communism is approximately 94 million. Compared to the deaths of the holocaust which would stand at 11 million. 94 million is a to high number‚ when dealing with innocent lives. The Potato Eaters‚ a painting by Vincent Van Gogh‚ a novel by George Orwell published in 1954‚ and “Dog‚” a 1977 song performed by Pink Floyd and written by David Gilmour explore the idea that communists countries have harsh conditions that will be apart of
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Bottled Water and Tap Water The quality of water that we drink is a significant determinant of our health. Guarantee of the safety of water is a base for the prevention of diseases. Several people prefer to drink bottled or commercial mineral water in the presumption that they are safer and have quality as compared to tap water. I believe that tap water is the best choice for a few different reasons‚ Bottled water is very popular and easily available at most stores. Consumers spend a large
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Peas and Carrots In Forrest Gump‚ Jenny and Forrest Gump had a love hate relationship throughout their lives together. However‚ they were always there at the end of the day for each other when they needed it. In The Kite Runner by Khalid Hossieni‚ Amir and Hassan share a similar relationship with each other. This relationship helps the reader better understand the plot and the development of the novel. Two social classes are presented in The Kite Runner‚ The Pashtuns and the Haraza. The Pashtuns
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Potato Enzyme Lab INTRODUCTION An enzyme is a protein that speeds up or slows down a specific chemical reaction in an organism. A good rule of thumb is to remember that enzyme names end in “-ase”. This will help in identifying enzymes in further readings. Generally enzymes are catalysts. Hydrogen peroxide is a toxic chemical that is produced in many organisms during metabolism. Organisms must get rid of this toxin to survive. One reaction turns the hydrogen peroxide into water and oxygen. The
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OSMOSIS IN POTATO TISSUES Vanessa Tsao‚ Lovette To‚ Wang Yeyun‚ Zhang Shenjia‚ Alicia Mak Class 101‚ Nanyang Girls’ High School‚ 2 Linden Drive‚ Singapore 288683 ABSTRACT In this project‚ the relationship between the concentration of salt solution and the length of the potato strip that was immersed in it was investigated. Five strips of potato of the same length were placed in different Petri dishes that contained water of different salt concentration. They were left for twenty minutes and the length
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Tap Water vs. Bottled Water "The U.S. public goes through about 50 billion water bottles a year‚ and most of those plastic bottles are not recycled" (Karlstrom‚ Solvie‚ and Christine Dell’Amore). Bottled water is harming our environment in many ways. Small things such as transporting these bottles set off fossil fuels which pollutes the air. This could have a huge impact on our environment in the long run. Tap water is more efficient and healthier for our environment‚ instead of bottled water. Bottled
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Which water is better to drink tap water or bottle water? That question is very common now days. Water is an essential part of human life. Whatever top water or bottled water‚ we need to drink at least 8 glasses of water per day to make sure we are healthy and everything run correctly‚ but the principal disagreement is that most people prefer to drink bottled water than tap water. Most of us would agree that the argument for drinking bottled water is basically the flavor and there are those who
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Since potato cells were used for this type of experiment‚ in an Isotonic solution the solute and water concentration are the same as inside the cell in which the isotonic solution contains 0.9% NaCl. In other words‚ water moves in and out in the same amount without causing any changes. In a hypertonic environment‚ the solute concentration is greater and water concentration is less outside the potato cell in which the hypertonic solution contains 10.0% NaCl. This solution will cause the potato cells
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24 IEEE JOURNAL ON EMERGING AND SELECTED TOPICS IN CIRCUITS AND SYSTEMS‚ VOL. 2‚ NO. 1‚ MARCH 2012 Design Optimization and Implementation for RF Energy Harvesting Circuits Prusayon Nintanavongsa‚ Student Member‚ IEEE‚ Ufuk Muncuk‚ David Richard Lewis‚ and Kaushik Roy Chowdhury‚ Member‚ IEEE Abstract—A new design for an energy harvesting device is proposed in this paper‚ which enables scavenging energy from radiofrequency (RF) electromagnetic waves. Compared to common alternative energy sources
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