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Chem 110A - Prep Chem

Ch. 8 - Empirical Formula

Find the empirical formula for the following:

 

A. 17.4 g S and 17.3 g O

 

B. 69.9 % Fe and 30.1 % O

 

C. What is the molecular formula of a compound with a molar mass of 140 g/mol that contains 30.4 % nitrogen and 69.6 % oxygen?