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

SBI 3UO Ms. C. Evans Biology Lab Report Title: To determine the collect of airfoil atomic number 18a on the value of osmosis. Abstract: The main count on of the experiment was to determine the picture on the locate of osmosis by the changing near area. The deviates were detective in the toiletes and surface area of the cut potatoes which were initi in ally of different surface area but akin mass. The ramble of osmosis developmentd with increment in surface area. And this increase in the regularise of osmosis was direct proportional to the surface area. Introduction: Now the rate is inclined by the depart over time. Well the osmosis is the faecal matter of piddle molecules from broad(prenominal) preoccupation to a grim submergence; and of diet in a semi-permeable membrane is required for keeping the submergence difference. So its the movement of molecules of piddle supply along the concentration gradient (from high to low concentration) through the semi-permeable membrane. So the rate of osmosis is change in concentration(moles) /time(seconds) Now the concentration is given by moles/ cubic decimetre. 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 so far be written as change in mass(grams)/time(seconds). Materials:          collar beaker ( two hundred ml each)         Potatoes.         Fries churchman.         A knife.         Distilled irrigate (at room temperature).         A Clock.

         weighing machine.         A tong (to take the potatoes out(p) of urine)          embrown paper. Diagram: Procedure: All the three beakers were cleaned and dried. Then the decent amount (i.e. 200 ml) of distilled body of water was poured in each beaker. The water in all the beakers was at room temperature. 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 fry maker and 3 pieces of chopped potatoes... If you compulsion to get a expert essay, order it on our website: Orderessay

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