To what extent does varying the Sodium Chloride concentration impact the mass change of Solanum tuberosum cubes? Katie Hynek 12/11/15 Personal Engagement: Every Thanksgiving my aunt and grandma switch off making mashed potatoes and every year they use the same recipe. This year it was my aunt’s turn and when we went to eat the mashed potatoes they were super salty. After thanksgiving dinner that year I became interested in figuring out how the using the same recipes the outcome could be so different
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different concentrations of sucrose solutions on the mass of potatoes Research question Is the mass of potatoes going to be smaller or bigger in different sucrose concentration? Introduction Osmosis is a process that occurs at a cellular level that entails the spontaneous net movement of water through a semi-permeable membrane from a region of low solute concentration to an area of high solute concentration in order to equalize the level of water in each region. Involved in this process
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Name: ______________________________________ Date: ________________________ Student Exploration: Osmosis Vocabulary: cell membrane‚ concentration‚ diffusion‚ dynamic equilibrium‚ osmosis‚ semipermeable membrane‚ solute‚ solvent Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. Suppose you were trapped on a desert island with no sources of fresh water. Should you drink water from the ocean? Explain why or why not. _________________________________________________________________________
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Historically‚ rich and powerful individuals with more authority have control of labeling what is not normal and what is deviant. Social norms‚ like laws‚ are created by the rich and powerful to protect their interest; so that they can socially construct deviance and crime to their advantage. The article Fraternities and Collegiate Rape Culture: Why Are Some Fraternities More Dangerous Places for Women by Ayres Boswell and Joan Spade personifies this process. Specifically‚ Boswell and Spade analyze
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Osmosis Abstract The basic principles of Osmosis and Diffusion were tested and examined in this lab. We examined the percent increase of mass and molarity of different concentrations of sucrose in the dialysis bag emerged in distilled water and the potato cores emerged in concentrations of sucrose. The data reinforces the principles of Osmosis and Diffusion‚ and in a biological context‚ we can simulate how water and particles move in and out of our own
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concentrated area to a low concentrated area. Water is one molecule that can diffuse freely in a cell. Other molecules need assistance through the cell membrane through a process called facilitated diffusion. Osmosis moves from an area of low concentration to high concentration. In osmosis water moves in the opposite way. Water flow is determined by the concentration‚ not the nature of the solute. There are a couple of things to consider for diffusion to work. The size of the cell‚ permeability
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What is the Difference Between a Cosmetologist and an Esthetician? Although a cosmetologist (with the right training) is sometimes also an esthetician‚ an esthetician is not usually a cosmetologist. That’s because cosmetology incorporates general care for hair‚ skin‚ and nails whereas esthetics‚ as a career‚ is solely about specialized skin care. Licensed estheticians‚ in general‚ have received more advanced training than cosmetologists in various facial beauty treatments‚ makeup application
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Understanding wood Trees are in essence‚ plants that can be harvested. If most plants have a fairly short rotation time‚ measured in week or months‚ depending in what kind of soil they are growing or in which type of climate‚ trees are a bit more permanent. What we mostly use from a tree‚ it’s its trunk. Of course there are oils and resins‚ but wood would be by far the ‘ingredient’ we use the most from a tree. That trunk‚ stays upright for years and it gives the tree the possibility to constantly
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Recommendations 21 References 22 Appendices 22 Abstract This experiment was performed in order to determine the molarity of a solution and the percent by mass of acetic acid‚ CH3COOH in vinegar. Acetic acid is monoprotic and belongs to the carboxyl family of organic compounds. The titration method is used to neutralize the acids by using the standardized sodium hydroxide solution. It reacts with bases which is sodium hydroxide‚ NaOH to form salt and water. The equivalence point of this neutralization
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the North and South. Even though both the North and South were experiencing and working on becoming independent from outside influences like the British‚ there were changes that not both were existing in their colonies but there were some changes that were occurring in both. For example‚ economics‚ religion‚ government‚ and politics shared some similarities but also some differences did occur as well. Economically the North and the South were similar in a few ways. “Squatting was a way of life among
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