[feredizzle]

I have a 1 mg/ml conc stock solution with a molecular weight of 423.15. I need to make a 100 micromolar conc solution, what is the volume i need from the stock. I need to place this inside a 1 ml containing well.

[Borek]

You have to show your attempts at solving the question to receive help. This is a forum policy.

It is a simple dilution.

http://www.chembuddy.com/?left=concentration&right=dilution-mixing