If 17.0g of MgSO4*7H2O is thoroughly heated,what mass of anhydrous magnesium sulfate will remain ?

Question

I don't even know where to begin on this one

Answer 1

Change 17.0 g to mols of the hydrate, then multiply by 1 mol MgSO4/1 mol MgSO4*7H2O and that times molar mass of the anhydrous material. It's almost the same as the SiO2 problem. Check my thinking.