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Answer:
218.7 mL
Explanation:
The reaction that takes place is:
First we calculate how many HCOOH moles reacted, using the given volume and concentration:
As 1 HCOOH mol reacts with 1 LiOH mol, 32.8 mmoles of LiOH are needed to react with 32.8 mmoles of HCOOH.
Finally we calculate how many mL of a 0.150 M solution would contain 32.8 mmoles: