Question

give a formula you can use to calculate the number of moles of H+ ions used at the equivalence point.

Answer 1

I assume this is a titration but I don't know of what. M x L = moles.
If I have misunderstood the problem or this is not what you want, please repost and clarify.

Answer 2

Well the lab is "determining Ksp for Ca(OH)2". And yes it's for titration.

Answer 3

Then (H^+) = Kw/(OH^-)

Answer 4

Thanks!