Question

I have been provided with a stock solution of 17β-estradiol at 60 mg / L (solution A).
From this must be prepared 100 ml of solution B at a concentration of 60 g / L.
Question 1:
How many ul of solution A to be transferred?
Question 2:
What is the molarity of 17β-estradiol in the stock solutions A and B?

Answer 1

Convert all measurements so they use the same units.
For the first question, use the fact that concentration=mass/volume.
For the second, simply look up the RAMs (Relative Atomic Masses) of all the elements in 17β-estradiol, multiply each one by the corresponding number of atoms and add it all up.