These are the results for the inital mass and circumferences for each egg. Even though we measured each of the circumferences, we decided not to use it because the results are not really accurate as we the egg has a non-regular shape and will give different readings when measured at different points.

The results after soaking the eggs in the liquid for 2 days. The first table shows the first day's measurements, and the second table shows the second day's measurements.

The final results of the change in mass.

Our hypothesis is rejected because the egg that is soaked in the distilled water gained the least mass. In fact, it was the egg soaked in coke zero that gained the most mass. I think this is because the water potential of the coke zero is higher than that of the egg. Osmosis is the net movement of water molecules through a partially permeable membrane from a region of higher water potential to a region of lower water potential, down a water potential gradient. Therefore, water molecules move into the egg through osmosis, causing the egg to gain mass because of the increase in the amount of water molecules. Also, the particles of carbonated water, acesulfame potassium, aspartame, caffeine, phosphoric acid,sodium citrate, sodium cyclamate, and flavouring will diffuse into the egg. Diffusion is the net movement of molecules from a region of higher concentration to a region of lower concentration, down a concentration gradient. As the concentration of these particles are higher in the liquid, they will diffuse into the egg, thus increasing its mass.

(click to enlarge)