You have DNA with a concentration of 100 ng/µl and you need to have 100 µl of a diluted DNA solution with a concentration of 25 ng/µl. How much DNA will you dilute? Give the volume of DNA stock and water in your dilution. A. 25 µl DNA + 100 µl water B. 4 µl DNA + 21 µl water C. 75 µl DNA + 25 µl water D. 25 µl DNA + 75 µl water

You have prepared a 2 M stock solution of an analyte you will be diluting to prepare your standard solutions.  What volume (in mL) will you need to add and dilute in a 250 mL volumetric flask to achieve a final concentration of 0.06 M?  Answer to 1 decimal place (Hint: C1V1=C2V2)

If you were making 1:25 dilution of a 25mM KCl solution what will be its final concentration?

If you were making a 1:10 dilution of a 100mM NaCl solution what will be its final concentration?

You have 220mL of a 10% solution (w/v). You need to prepare a 1:200 solution. Howmuch diluent will you add to the stock solution?

If you add 1.0 ml of a colored solution (Stock) to 4.0 ml of water in a test tube, what is the dilution ratio, of the colored solution to the final volume?