4th+hour+group6!

We started with four dialysis tubbings, tied one end of each, and opened the other end. then we put distilled water in the first one, 15% sucrose in the second one, 30% sucrose in the third one and distilled water in the last one. They were all put in their own beaker, the first three in distilled water and the last in 30% sucrose. We observer the distilled water in the distilled water from the first time we weighed it to the last, it changed -1.4 grams. The 15% sucrose in distilled water changed 2.7 grams. The 30% sucrose in distilled water changed -0.4 grams. Finally, the distilled water in 30% sucrose changed 6.4 grams. In conclusion, the reasons for this change is that the sucrose moleclues are too large to fit through the bags, the distilled water can come into the bags but not leave very easily.