Science Help Online Worksheet 5-9b Determining Empirical Formula from Number of Moles
 
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1.  Determine the empirical formula of a compound that contains 58.80% barium, 13.75% sulfur, and 27.45% oxygen by mass.

 

 

 

2.  An organic compound has an empirical formula of CH3 and a molecular mass of 30 u.  What is the molecular formula?

 

 

 

3.  A hydrated compound has an analysis of 76.9% CaSO3 and 23.1% H2O.   What is the formula?

 

 

 

Please forward all questions, comments and criticisms to Gregory L. Curran.
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Last Modified March 18, 2004