Concentration is the amount of a substance in a given mass or volume of a material, expressed in percentage, mol/L, mol/kg, g/L etc.
there is no salt concentration.
That depends on the concentration of salt and the altitude.
Each enzyme has an optimal salt concentration. Changes in the salt concentration may also denature enzymes.
Osmosis of water from a low concentration of salt to a high concentration
depends on the concentration of salt. The higher the concentration of salt the more likely you are to float.
The same
The concentration of salt in water is measured with a salinometer or by the chemical determination of chlorine or sodium.
Salt does not boil away at approx. 100 Celsius. The water evaporates causing the concentration of salt to increase.
The maximal concentration is 20 %.
salt water
It depends on the concentration of salt in the water.
The higher the salt concentration the more water that is drawn from the bean. The lower the salt concentration the more the bean will expand.