Yes, solutions with a high percentage of electrolytes would be considered hypertonic.
hypertonic
The solution is likely hypertonic and water is leaving the cell.
If a cell dies by implosion, it was likely in a hypertonic solution where the external concentration of solutes is higher than inside the cell. This causes water to move out of the cell, leading to shrinkage and collapse.
If an alcohol-treated cell is kept in a hypertonic solution, it will likely shrink due to osmosis. The hypertonic solution has a higher solute concentration than the cell, causing water to move out of the cell and into the solution, leading to cell dehydration and shrinkage.
They diffuse into one another until the point where they reach equilibrium. This point, however cannot be predicted from what you gave nor is it any more likely to be in favor of the hypertonic, the hypotonic, or your idea of isotonic.
Liquid X is likely a hypertonic solution, meaning it has a higher solute concentration than the cells. When cells are placed in a hypertonic solution, water leaves the cells to try to equalize the concentration, causing them to shrink in a process called plasmolysis.
The solution surrounding the plant cell is likely hypertonic. In a hypertonic solution, the concentration of solutes outside the cell is higher than inside the cell, causing water to move out of the cell to balance the solute concentrations. This results in the cell shrinking away from the cell wall, a process known as plasmolysis.
In a hypertonic solution water is most likely to move out of the cell because it is in a high concentration and the cell will shrink. They tend to give up water across the permiable cell membrane
It will most likely die. Only a few species of plants can thrive on salt or brackish water.
The instructor likely used conductivity testing to determine the presence of electrolytes. This involves measuring the ability of a solution to conduct electricity, which is indicative of the presence of dissolved ions like electrolytes. Conductivity meters or probes are commonly used for this purpose.
The extra fertilizer likely created a hypertonic environment around the roots of the corn. In a hypertonic solution, the concentration of solutes outside the roots is higher than inside, causing water to move out of the plant cells. This can lead to dehydration of the roots and hinder the plant's ability to absorb water and nutrients. As a result, the corn may experience stress and reduced growth.
Isotonic is when the cell is the same concentration as the surrounding solution. Hypotonic is when the cell is more concentrated than the surrounding solution and water moves in. Hypertonic is when the cell is less concentrated than the surrounding solution and water moves out.