Chemistry! Dilution: Moles to Volume! Please help!?

Posted on 2015-09-18 06:56:00 in Chemistry by ARIANA

1.) You wish to make a 0.311 M hydroiodic acid solution from a stock solution of 3.00 M hydroiodic acid. How much concentrated acid must you add to obtain a total volume of 50.0 mL of the dilute solution?
___ml

2.) In the laboratory you dilute 4.22 mL of a concentrated 12.0 M hydrobromic acid solution to a total volume of 50.0 mL. What is the concentration of the dilute solution?
___M

3.) You wish to make a 0.245 M hydrochloric acid solution from a stock solution of 6.00 M hydrochloric acid. How much concentrated acid must you add to obtain a total volume of 175 mL of the dilute solution?
___ml

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