Question

What will happen to a red blood cell placed in a solution of 99.3% water and 0.7% salt?

Answer 1

Water will move into the cell.

Explanation:

Because red blood cells are isotonic in a solution of 0.9% salt, if you reduce the salt levels, the water will be greater and the cell will swell, causing it to become hypotonic.

Answer 2

The cell with swell and probably explode.

Explanation:

Since the concentration of water is higher than that of the cell, water will move into the cell by osmosis, and so the cell will swell up with water, and maybe even burst.

This is known as a hypotonic solution, where the concentration of solute in the cell is higher than that of the solution.