Composition Combustion Analysis And Molecular Formulas

Practice for % Composition, Empirical and Molecular formulas

1. When 2.00 grams of a pure compound is combusted, 2.9302 g of water and 6.1395g of carbon dioxide are produced. What is the empirical formula?

2. The molar mass of a compound was determined to be 87 g/mole. If the empirical formula is CHO, what is the molecular formula for this compound?

3. When 5.496 grams of a pure compound is combusted, 5.8604 g of water and 12.2790 g of carbon dioxide are produced. What is the empirical formula?

4. The molar mass of a compound was determined to be 90 g/mole. If the empirical formula is CH2O, what is the molecular formula for this compound?

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