Osmosis Lab

Purpose: To observe the net movement of water molecules by measuring conjuret ex mixture. * Indep annulent variable: sucrose * babelike variable: pack overpower win of the tubes Equipment: Hypothesis: If the sucrose is hypertonic, past the turn in will discharge press outt. Procedure: 1.) Tie a knot in one terminal of a dialysis tube that has been sozzled in the water. 2.) Pour 5ml of sucrose solution into the other end of the tube. 3.) Get rid of the air in the tube and adhere a knot close to the end of the supply. 4.) Quickly weigh the tubing and place it in a beaker of water. Record the cargo of the tubing. Write down the beginning time. 5.) Make a gage tube using 5ml of distiller water as a ask and weigh it. Record the weight. 6.) Place the second filled tubing In a different beaker of water and wr ite down the beginning time. 7.) After 30min, reweigh each tide and figure the wobble in mass using the formula.

* final- initial/ initial elongation that by 100 8.) Throw the empty tubing away. compend and goal: In the experiment the control was hypertonic. But it didnt gain as much water as the sucrose. The way you figure the change of percent, you minus the final by the initial then distinguish that. Then you divide that by the initial then propagation that by 100. The results were as expected, the sucrose gained more weight then the control. The sucros e gained 28.3 where the water only gained 5.! 7. The experiment was unblemished still not accurate as it could be for example, the scales argon so touchy that the envelop from someone walking assemble it off. So it you could make it to where the scale was in a wind dependant area that would make it even more accurate.If you destiny to charm a full essay, order it on our website: BestEssayCheap.com

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