... sugar concentrations/molarities (0.1M, 0.2M etc) * Washable pen Useful Science involved - Osmosis Osmosis is the diffusion of water from a dilute solution to a more concentrated solution through a semi-permeable membrane. The water moves from where it's a high concentration to where it's a low concentration. Concentration of the water is the only thing that matters; the solute molecules (e.g. sugar) can't pass through the membrane. The effect of all of this is to gradually dilute the sugar solution Example - Prediction - After taking a close look at my preliminary experiment, I predict that the molarity of the potato will be 0.3M and the mass will increase if the solution is less than 0.3M and decrease if it is more. If the solution is exactly 0.3M then there will be no change in mass, this is an isotonic solution. A below 0.3M would mean that water would move in by osmosis and a ...

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