you need to prepare 750.ml a diluted hydrochloric acid solution that has a molarity of .550m. the stock solution is 12.0m. how much of the stock solution must you take to make the diluted solution

Recall what happens when MgCl2 dissolves water. A 1.250 gram sample of MgCI2 is dissolved in a total in volume of 100.00 mL of aqueous solution. The molar concentration (molarity) of the is Cl ions in solution You have a 250.00 mL stock solution of HCl which is 1.55 M. You need to prepare 375.00 mL of a diluted solution having a concentration of 0.200 M, by diluting a certain aliquot of the stock solution. How many mL of ti stock solution are needed to prepare the diluted solution?