Hi! I'm an IB student and I need to solve an exercise in chemistry. "The relative molecular mass of aluminium chloride is 267 and its composition by mass is 20.3% Al and 79.7% chlorine. Determine the empirical and molecular formulas of aluminum chloride." This is it! I've solved it but the number of atoms of the elements aren't positive integers. They are, actually, decimal numbers.

Question

anonymous · Answer

I believe you have only calculated the mole ratio of both  elements. Could you show your steps so we can see how you calculated your answers? 
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