Question

25.0 ml of a 6.0 m stock solution is diluted using water to 100 ml. How many moles of are present in the dilute solution? 6.0 moles 0.6 moles 0.15 moles 1.5 moles

Answer 1

The number of moles is 0.15 moles

Step-by-step explanation:

Given data

The volume of the solution is 25.0 mL = 25 *10^-3 L

The molarity of the solution is 6.0 M

This means the number of moles in this solution is: 6.0 M * 25 *10^-3 L = 0.15 moles

This solution will be diluted, by increasing its volume to 100 mL = 100*10^-3 L

The new solution has 0.15 moles in 100 mL

The Molarity of this solution will change, but the number of moles will not change.

The number of moles is still 0.15 moles