Conclusion
The main purpose of this experiment was to determine the effect of changing molarities on diffusion of water molecules. The claim made was that the net direction of water is affected by water potential and solute potential. It was also predicted that as the sucrose solution molarities increased, the % change in the mass of the dialysis bag would increase and the change in the potato cores would be negative.
The control group for the experiment was the dialysis bag and potato cores that were immersed in distilled water. Because the experiment was based on the change in molarities, distilled water was a good control because distilled water is pure and has no concentration of any solution. The experimental groups for this experiment were the dialysis bag and the potato
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These were the experimental groups because their solute concentrations and membrane permeability were very different and were able to show the two different reactions of osmosis comparing when the environment is hypertonic or hypotonic to the object. In the dialysis bag, the % change in mass at distilled water was positive and very high. As the molarity of the solution increased, the % change in mass also increased. In the potato cores, the % change in mass for the control of distilled water was very high at almost 20%. However, as the molarity increased, the % change in mass was negative and increasing. There were 9 total trials for the dialysis bag experiment and 6 trials for the potato cores. These multiple trials made it easier to spot out outliers and make sure the data was accurate. Some of the trials had to be left out of the data because they