Question

I need help finding the mole in the following...( I filled in part of the information, the blank parts is what i do not understand)
Mass of CuSO4 xH2O: 93.000g
Mass of CuSO4: 91.197g
Mass of H2O: 1.803

This is what I do not understand...

Moles of CuSO4:
Moles of H2O:

Moles of H2O for every mole of CuSO4:

Chemical formula of CuSO4 XH2O (Hint: replace the X with the number of moles of water for every mole of CuSO4):

Mass of MgCl2 xH2O: 93.000g
Mass of MgCl2: 90.342g
Mass of H2O: 2. 658g


Moles of MgCl2:
Moles of H2O:

Moles of H2O for every mole of MgCl2:

Chemical

Answer 1

and this part also Chemical formula of MgCl2 XH2O (Hint: replace the X with the number of moles of water for every mole of MgCl2):