What would be the best way to prepare 20 micromolar solution phosphate buffer. I'm returning to this kind of chemistry after a bit so a little rusty.
So if I started out with a 0.1 M buffer solution, I remember the equation M1V1 = M2V2. So (0.1) (10 mL) = (mL) (2.0x100^-7).
After solving for the volume I need, do I just dilute it with water with whatever volume I solved for and that will give me the concentration? So confused!