Question

You made 2 liters of a solution containing a final concentration of 10 uM of a drug. To make that volume, you used 3.5489 mL of the stock solution of the drug. What was the concentration of the stock solution?

O 5.635 mM
O 5,635 mM
O 0.5635 uM
O 563.5 uM
O 56.35 mM

Answer 1

The concentration of the stock solution is 56.35 mM.

Step-by-step explanation:

To determine the concentration of the stock solution, we can use the equation:

(stock concentration) × (stock volume) = (final concentration) × (final volume)

Plugging in the given values, we have:

(stock concentration) × (3.5489 mL) = (10 µM) × (2000 mL)

Simplifying, we find that the concentration of the stock solution is 56.35 mM.