You have a large amount of 8.00 M stock solution. You need 1.60 L of 3.00 M solution for an experiment. How would you prepare the desired solution without wasting any stock solution?

Answer 1

You need 3*1.6 = 4.8 mols of stuff

it is 8 mols/liter

4.8 mols ( 1 liter/8 mols) = .6 liters of the strong stuff

so mix 0.6 liters of the 8 M stuff with 1 liter of water