Answer:
The molecular formula for a compound with the empirical formula Cacl2 and a molecular mass of 330g is C2H4Cl4Ca. The empirical formula can be used to calculate the molar mass of the compound, which is then used to determine the actual number of atoms of each element present in the compound. In this case, one mole of Cacl2 has a molar mass of 110.976 grams, therefore for a compound with a molecular mass of 330g, there must be three moles of Cacl2 present. This gives a molecular formula of C2H4Cl4Ca.