Answer;
The number of moles remains constant.
Explanation;
-A dilution is a solution made by adding more solvent to a more concentrated solution (stock solution), which reduces the concentration of the solute.
-To dilute a stock solution, the following dilution equation is used:
M1 V1 = M2 V2. where; M1 and V1 are the molarity and volume of the concentrated stock solution, and M2 and V2 are the molarity and volume of the diluted solution you want to make.
-The process of dilution keeps the amount of solute constant, but increases the total amount of solution, thereby decreasing its final concentration.