How many moles of calcium phosphate can you make using 111 g of Caci ?

What is the mass of 0.46 mol of mgcl2

If anyone would be able to me out with these three questions it would be these are from the chem 2202 course.

The data below were determined for the reaction shown below. s2o82– + 3i – (aq) → 2so42– + i3– expt. # [s2o82–] (m) [i –] (m) initial rate 1 0.038 0.060 1.4 × 10 – 5 m/s 2 0.076 0.060 2.8 × 10 – 5 m/s 3 0.076 0.030 1.4 × 10 – 5 m/s the rate law for this reaction must be: