Xif you have a lung cell with 30% oxgen inside the cell and 90% outside, and 70% carbon dixide inside and 10% outside the cell, which way will each substance move and why?

The oxygen will move to the cell therefore carbon dioxide will move outside the cell. Main rule of osmosis= a process by which molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution to a more concentrated until they are equalized