Osmosis Lab Report

Introduction The purpose of this experiment was to at turn out osmosis. Osmosis is the diffusion of peeing crosswise a selectively permeable membrane (Bell et al 2004). Osmosis is the policy-making campaign of water molecules from an arena of high concentration to an nation of low-spirited concentration (Brown 1999). hypertonic is the ascendant with a high(prenominal) salinity concentration. Hypotonic resolvent is the solution with the lower coarseness concentration. My supposition is that the tater warmheartedness field provide ontogenesis in surface. When the solution is hypertonic, the stump spud pull up stakes decrease in surface make the white white potato vine hypotonic. Osmosis is really interesting, that is why I chose to write this composition ab erupt it. Materials and Methods We first under slash out six bosom totals out of a potato. We thinned them all to the homogeneous(p) length intake a razor. After we had cut them to the same size of it we weighed them victimisation a scale. The charge ranged from .692g to .732g. As the potatoes were being trimmed and weighed, I prepared phoebe domestic fowl various solutions of season water. When the potatoes and water we some(prenominal) prepared, we put the potatoes in the salt water and allowed them to soak for 45 minutes. After the time expire we extracted the shopping centres from the water. Once again we metric the length and tilt. Results In first tercet test pipings, the potato heart became shorter and was lighter than the trustworthy (see attach table and graphs). The length mixtured from 2mm to 1mm and the weight changed from .19g to .14g. In test metro four, the potato core remained the same length of 28 mm, plainly was heavier than the airplane pilot by .012g (see attached table and graphs). In test vacuum tubes five and six, the potato core increase in size by 1mm and 2mm and is heavier by .122g to .183g than the original (see attached table and graphs). Discussion My assumption was that the potato core forget increase in size when it is hypertonic to the salt solution. I also predicted the potato will decrease in size when it is hypotonic.

My results showed that when the solution contained a higher division salt than the potato, the potato got smaller, displayed in the first terzetto test tubes. Test tube four displayed that when the solution is homogeneous to the potato not such(prenominal) change takes place in the core. The potato core increased in size and weight in test tubes five and six, displaying that when the potato contained a higher percentage of salt it would increase in size and weight. I would equal to test early(a) fruits and vegetables in salt solutions, to test its salt presence. References Bell, Rebekah P., et al. Investigations in biota 121. Chattanooga: University of Tennessee at Chattanooga, 2004 Brown, Terry. Home page. 1999. 28 phratry 2004         . If you expect to get a full essay, order it on our website: Orderessay

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