Question

10. Calculate the concentration of a solution made by diluting 10.00 mL of 0.1104 M HCl to 25.00 mL, then taking 10.00 mL of that solution and diluting to 50.00 mL.

Answer 1

you diluted it 2.5 times, then diluted it five more times, or 12.5 times.

New concentration: .1104/12.5