NAME: Donna Ha TITLE: Measuring the Rate of Osmosis Using “De-shelled” Chicken Eggs INTRODUCTION: In order to fully understand the concept of this experiment‚ one must first be introduced to diffusion. Diffusion is a spontaneous process by which molecule particles move from one area that is highly concentrated to another area in which its concentration is lower. Cells contain fluids and are surrounded by fluids; in order for a cell to function it is required to be in a balanced state. The
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both the lab group and the class average‚ there is evidence that osmosis did occur in the bags. The largest change in mass was in the 1.0M sucrose bag the mass went from 12g initially to 14.2g‚ this gained 2.2g‚ an 18.3% change in mass for the group data over the duration of the experiment. The 0.2M bag went from 10.2g to 10.9g a 6.9% change in mass; the 0.4M bag went from 12.1g to 12.2g .83% change in mass; the 0.8M bag went from 10.9g to 12.2g and an 11.9% change in mass. During osmosis water diffuses
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this experiment the focus is the importance of diffusion‚ the random movement of molecules from an area of higher concentration to areas of lower concentration. Osmosis is a special kind of diffusion where water moves through a selectively permeable membrane (a membrane that only allows certain molecules to diffuse). Diffusion or osmosis occurs until dynamic equilibrium is reached‚ or has been reached. When equilibrium is reached‚ it means that the concentrations in both areas are equal and no new
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Introduction The reason of this experiment was to identify the properties and effects of osmosis. Osmosis can be defined as the diffusion of water through a selectively permeable membrane. (Miller/Levine) Osmosis occurs when there is an area of higher and lower concentration. Osmosis is a type of diffusion. Diffusion is when molecules move from an area of higher concentration to an area of higher concentration. The three types of concentrations are hypotonic‚ hypertonic‚ and isotonic. When in comparison
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G. Y. S. Period: 6 09/11/12 Osmosis Lab I. Objective: The purpose of this lab is to put the solutions in chronological order from least to most molarity. If the solutions are hypertonic then‚ the water will go in and the order of the substances will be C‚ D‚ A‚ B‚ E. II. Materials and Methods: See attached page. Results: Table 1.1 III. Table 1.1 | Initial | Final | % Change | A | 11.4 | 11.86 | 4.03% | B | 11.67 | 15.33 | 33.68% | C | 10.84 | 11.86 | 9.4% | D | 12.02 |
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Osmosis Lab Report by Evan Gerber Claire Cambron First Lab Report Wednesday 10:30am February 20‚ 2013 Theresa Gburek Abstract The major objective of the experiment was to test the effect of the concentration gradient on the diffusion rate. It was hypothesized that the greater the stronger the concentration gradient‚ the faster the rate of diffusion would be. To test this‚ dialysis tubes were submerged in different concentration fructose solutions. We weighed the tubes at specific
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within a cell are called Diffusion. When molecules move across a cell membrane it is known as Osmosis. Diffusion is the process by which molecules of a substance move from areas of higher concentration of that substance to areas of lower concentration. Diffusion can be the transfer of anything anywhere. However‚ that is not true for osmosis. Osmosis is diffusion‚ but a specific type of diffusion. Osmosis is only the diffusion of water molecules through a selectively permeable membrane and a concentration
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and air as the control. When performing this experiment‚ the main element to consider is hypertonic‚ hypotonic and isotonic solutions and how they relate to osmosis. Osmosis is the process where a fluid passes through a semipermeable membrane‚ which moves from an area which the solute is present in high concentrations. As a result of osmosis‚ there will be an equal amount of fluid on either side of the barrier‚ creating an isotonic solution. When cells are placed in an isotonic solution‚ the movement
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determine the effects of different salt concentration on the percentage of weight change in potato cubes 2) To determine the isotonic solution concentration for the potato Hypothesis: 1) If the concentration of the salt solution is higher than the concentration in the potato cubes‚ the percentage of weight change in potato cubes will be higher (positive). If the concentration of the salt solution is the same as the concentration in the cell‚ there will be no net movement of water through osmosis therefore
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This trial was performed to decide the percent centralizations of starch in two distinct arrangements. It showed us through the strategy utilized‚ which was osmosis (the dispersion of watered). Osmosis normally indicates on the grounds that it began to change in the mass for both the dialysis tubing loaded with the bizarre arrangement and the container of sucrose and water. Demonstrated that dissemination of water had happened over the semi-penetrable dialysis tubing. It’s checked on the grounds
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