Question

how many liters of a 0.50 solution are needed to give 3.5 moles of solute

Answer 1

0.50 Molar means 0.50 moles/liter
(.5 moles/liter)/3.5 moles= 1/7 Liters

Answer 2

I did that with a few tools and i got 1/7 Liters