If a 7.0M solution was diluted to 2.5 M 40 mL solution, what was the initial volume of the solution?
A 0.4M 200 mL solution is diluted to 0.1M. What is the final volume?
If 100mL of water is added to 300 mL of acid that has a molarity of 2.0M, what is the concentration of the new mixture ?