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What is its empirical formula? (Co3Mo2Cl11) 18 Honors Chemistry. 2016-2017. WS 6.6 Molecular Formulas. Determine the empirical formula for each of the following substances. The percentage composition is given. Then find the molecular formula by using the molar mass. 1. 92.3% carbon; 7.7% hydrogen Molar mass – 78 g/mol (C6H6) ................
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