A) What is the empiral formula of a compound containing 60.0% sulfur and 40.0% oxygen by mass?
B) Calculate the molecular formulas of the compounds having the following empirical formulas and molar masses: C2 H5 ,58g/mole; CH, 78g/mole; and HgCl, 236.1g/mole.
C) Na3 PO4 +ZnSO4 -Na2 SO4 +Zn3 (PO4)2