Which of the following is true regarding dilutions?
the number of moles of solute do not change
the number of moles of solute change
more solvent is added to a stock solution to increase the concentration
more solute is added to a stock solution to increase the concentration
the number of moles of solute do not change
the number of moles of solute change
more solvent is added to a stock solution to increase the concentration
more solute is added to a stock solution to increase the concentration