OSMOSIS!!! what do you expect to happen! Hey guys can someone help me with the osmosis scenarios and rank them in order of the most mass gained and also write a good definition of what osmosis is thanks. thanks first of all i have the following solutions i have 5% sucrose in dialysis tube in distilled water - cup 1 i have 10% sucrose in dialysis tube in distilled water - cup 2 i have 20% sucrose in dialysis tube in distilled water - cup 3 i have 20% sucrose in (0.9% nacl solution - cup 4 i have 5% nacl in distilled water - cup 5 my definition of osmosis is what it think is the net movement of water molecules from area of high concentration to low concentration. normally i would expect the higher concentration in the dialysis tube the more it will gain in mass but i got confused with the 5% nacl in distilled water and 20% sucrose in 0.9% nacl, i dont know which is more concentrated but would i assume 20% sucrose in 0.9% nacl isotonic??? please rate the order you guys think from less increasing mass - most increasing mass i will have a shot and chose. THE ORDER from 1 (lowest increasing mass ) to 5 ( most increasing mass) 1. cup 4 2. cup 1 3. cup 2 4 cup 5 5. cup 3 thats my guess anyone else want to give a try????