How many moles of Ca2+ are present in 5.67 moles of calcium phosphate? I"m not sure how to approach the problem.

1 Answer
Meave60 ยท Stefan V.
Sep 28, 2015

There are 17.01 moles of calcium 2+ ions in 5.67 moles of calcium phosphate.

Explanation:

The chemical formula for calcium phosphate is "Ca"_3"(PO"_4)_2. This means that in one mole of calcium phosphate, there are three calcium ions and two phosphate ions.

To determine the number of moles of "Ca"^(2+) ions that are in 5.67 moles of "Ca"_3"(PO"_4)_2, do the following:

5.67 "mol Ca"""_3("PO"_4)_2xx(3 "mol Ca"^(2+))/("1 mol Ca"""_3("PO"_4)_2) = 17.01 "mol Ca"^(2+)"

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