Question

ow much of the 0.2M stock solution of NaCl did you need to make a 100mL dilution of NaCl at final concentration 0.05M? Please give your answer in units of MILLILITERS, however do not explicitly include any units in your answer.

Answer 1

You would need 25 mL of the 0.2M stock solution of NaCl to make a 100mL dilution at a final concentration of 0.05M.