Question about Concentrations and Dilutions
by Daniel E.
My pharmacy technician class just recently started into the module of concentrations and dilutions. From the alligations and more of the easy stuff this type of math is starting to confuse the crap out of me. I never know where to start for all the different worded problems. I have an example question from the book I'm working from and would like to know where to start if possible.
Prepare 3 mL of a 10mg/mL phenobarbital solution from a 65mg/mL stock solution that comes in a 1 mL vial. How much concentrate and how much diluent are needed to obtain the desired final volume?
Thank you for your time