Answer:
Step-by-step explanation:
A red blood cell placed in a solution of 90% water and 10% salt will experience osmosis. Osmosis is the diffusion of water across a semi-permeable membrane from an area of high water concentration to an area of low water concentration. The red blood cell's membrane is semi-permeable, which means that it allows small molecules like water to pass through, but not larger molecules like salt.
In this scenario, the red blood cell is placed in a solution that has a lower water concentration than the cell's internal environment. Therefore, water will move from inside the cell to the outside of the cell through the semi-permeable membrane, in an attempt to balance the concentration of water on both sides of the membrane.
As a result, the red blood cell will swell and eventually burst if the concentration difference is too high. This process is called hemolysis.
It's important to note that this is an oversimplified representation of a real-world scenario, as the red blood cells are not only affected by osmosis, but also by other factors such as the pH of the solution, the presence of other dissolved substances, and the mechanical forces acting on the cells.