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Unformatted text preview: 0.3576 = 1.000 mol C 0.7154 mol H / 0.3576 = 2.000 mol H These numbers are close enough to integer values to be rounded to integers. 1.000 mol C = 1 mol C 2.000 mol H = 2 mol H EMPIRICAL FORMULA = CH 2 . Step 3. Determine the molecular formula for the compound. Divide the molar mass of the compound ( 28.05 g/mol) by the empirical formula weight to determine the number of empirical units in the molecule. Empirical weight for CH 2 = 1 ( 12.01 ) + 2 ( 1.008 ) = 14.03 g/mol empirical unit Molecular Weight = 28.05 g/mol molecule = 2.00 empirical units / molecule Empirical Weight 14.03 g /mol empirical unit There are 2 CH 2 units per molecule. MOLECULAR FORMULA = ( CH 2 ) 2 = C 2 H 4...
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This note was uploaded on 05/07/2010 for the course CHEM 116 taught by Professor Stevenson during the Spring '08 term at Purdue University-West Lafayette.
- Spring '08