The composition of a hydrated cesium-salt of a copper(II)-oxalate complex ion conforms to the general formula:

Cs_xCu(C₂O₄)₂wH₂O

A 0.7512-g sample of this compound required 39.70 mL of 0.02796 M KMnO₄ solution for the titration of all of the oxalate.

1) Calculate the number of moles (mol) of oxalate in this sample.

2) Calculate the number of moles of oxalate per gram (mol/g) of the compound.

3) Calculate the molar mass of the compound.

4) What is the value of x?

5)What is the value of w?