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Tuesday, January 28, 2014

The Lab Report. The rate of ossmosis and the surface area.

SBI 3UO Ms. C. Evans Biology Lab Report Title: To determine the effectuate of surface area on the value of osmosis. Abstract: The primary(prenominal) aim of the experiment was to determine the effect on the ordinate of osmosis by the changing surface area. The deviates were spy in the flock and surface area of the chopped potatoes which were initi in exclusivelyy of contrasting surface area but same mass. The swan of osmosis change magnitude with increase in surface area. And this increase in the evaluate of osmosis was directly proportional to the surface area. Introduction: Now the aim is inclined by the change over time. Well the osmosis is the case of piddle molecules from broad(prenominal) submersion to a low concentration; and of black market in a semi-permeable membrane is required for keeping the concentration difference. So its the movement of molecules of water supply along the concentration gradient (from high to low concentration) throu gh the semi-permeable membrane. So the rate of osmosis is change in concentration(moles) /time(seconds) Now the concentration is given by moles/liter. And the moles are mass(gram)/molecular(a) mass(grams). So the moles are directly proportional to the mass of the substance. So the rate of osmosis could even be compose as change in mass(grams)/time(seconds). Materials:         Three beaker ( two century ml each)         Potatoes.         Fries maker.         A knife.         Distilled water (at room temperature).         A Clock.         Weighing machine.         A tong (to take the potatoes out(p) of water)         Brown paper. Diagram: mathematical process: All the three beakers were cleaned and dried. Then the equal amount (i.e. cc ml) of distilled water was poured in each beaker. The water in all the beakers was at room tempe rature. This was done so that the effect of! temperature on the rate of osmosis could be negligible. Then the potatoes were chopped with the French minor maker and 3 pieces of chopped potatoes... If you want to get a full essay, order it on our website: OrderCustomPaper.com

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