The number of particles of a solute in a solution is described by its . The ability of a solution to affect the fluid volume in a cell is referred to as its .

The number of particles of a solute in a solution is described by its osmolarity. The ability of a solution to affect the fluid volume in a cell is referred to as its tonicity.

Explanation:

When concentration of a solution is expressed as total number of solute particles in a liter of solvent is called osmolarity.

For example, one mole of a glucose will not dissolve in 1 liter of solution. This means that a solution of 1 mol/L of glucose will have an osmolarity of 1 Osm/L.

The concentration of solute particles relative to that of another solution present on the opposite side of a cell membrane is called tonicity.

Basically, it is the ability of extracellular solution to allow the water move in and out of the cell by osmosis.

Thus, we can conclude that the number of particles of a solute in a solution is described by its osmolarity. The ability of a solution to affect the fluid volume in a cell is referred to as its tonicity.

the reaction mixture contains some ammonia, plus a lot of unreacted nitrogen and hydrogen. the mixture is cooled and compressed, causing the ammonia gas to condense into a liquid. the liquefied ammonia is separated and removed. the unreacted nitrogen and hydrogen are then recycled back into the reactor .

the answer is b because, investigating whether another species of moth also drinks tears might be interesting, but it would not directly explain why this species of moth does.

to explain why this species of moth drinks tears, the scientist could ask: "what nutrients that moths need are in elephant tears? "

the scientist could experiment with moth repellent or oter ways to keep the moths away, but that would not answer his original question.