How do I determine the stock solution required to make 86mL of a 6mM from a 0.11M concentrated stock solution?

How do I determine the stock solution required to make 86mL of a 6mM from a 0.11M concentrated stock solution?|||You mean the volume of the stock solution. Use the dilution formula:





mL(conc) x M(conc) = mL(dil) x M(dil)





The stock solution is the concentrated one, so solve for mL(conc):





mL(conc) = mL(dil) x M(dil) / M(conc) ..... then plug and chug


mL(conc) = 86 mL x (6.0x10^-3M) / 0.11M .... convert mM to M


mL(conc) = 4.69 mL .... or 4.7 mL to two significant digits