What volume of 0.250 M calcium chloride needs to be added to sodium phosphate to produce 35.0g of calcium phosphate?

Write the equation and balance it.

3CaCl2 + 2Na3PO4 ==> Ca3(PO4)2 + 6NaCl

mols Ca3(PO4)2 = grams/molar mass
Convert mols Ca3(PO4)2 to mols CaCl2 using the coefficientsin the balanced equation.
Then mols CaCl2 = grams CaCl2 x molar mass CaCl2