Question

How is a mole related to concentration?
A. The saturation point of a solution is measured in moles
B. The volume of particles of a solute in a solution is measured in moles
C. The number of particles of solute in a solution is measured in moles
D. The mass of the solute in a solution is measured in moles

Answer 1

The correct answer is:

C. The number of particles of solute in a solution is measured in moles.

In chemistry, concentration is often expressed in terms of moles of solute per unit volume of solution (e.g., moles per liter, or molarity). Therefore, the mole is used to quantify the number of particles (atoms, molecules, ions, etc.) of the solute present in a solution.