Answer
.85 mol would be required.
Work Step by Step
This is a very basic neutralization reaction.
$H^+ + OH^- \rightarrow H_2O$
The number of moles are stoichiometrically equal from the equation.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.