4) C2H6O2. 1) C6H6. 2. Determine the empirical formula from the molecular formula: a) C 6 H 6: h) C 2 H 2: b) C 2 H 6: i) Na 2 SO 4: c) C 3 H 8: j) C 6 H 5 N: d) Fe 3 (CO) 9: k) P 4 O 10: e) C 2 H 4 O 2: l) Re 2 Cl 6: f) N 2 H 4: m) Se 3 O 9: g) CaBr 2: n) LiCl: 2. Example #1: What is the molecular formula of a compound whose molar mass is 60.0 g/mol and empirical formula is CH4N? 6) A compound with an empirical formula of C2OH4and a molar mass of 88 grams per mole. It is a whole number multiple of the empirical formula. Write the empirical formula and name the compound. 5) X39Y13. 2) What is empirical formula of a compound which consists of 89.14% Au and 10.80% of O? 5) X39Y13. The relationship between a compound’s empirical and molecular formula can be written as: x(empirical formula) = molecular formula 3. Caffeine has the chemical formula C H N O 8 1 0 4 2. Write the empirical formula for the following compounds. 9. B. Lesson Worksheet: Empirical and Molecular Formulas. Calculate the empirical formula of a compound that is 85.6% C and 14.4% H (by mass). A compound has an empirical formula of C2H30 and a molar mass of 172 g/mol. 2. 3) WO2. C. Example #2: What is the molecular formula of CH3O if its molar mass is 62 g/mol? Empirical and Molecular Formula Worksheet. SHOW WORK ON A SEPARATE SHEET OF PAPER. A compound with a molecular mass of 46.0g/mol and an empirical formula of NO 2 Molecular Formula Worksheet Write the molecular formulas of the following compounds: 1) A compound with an empirical formula of C 2 OH 4 and a molar mass of 88 grams per mole. A compound with a molecular mass of 70g/mol and an empirical formula of CH 2. b. Some of the worksheets for this concept are , Empirical and molecular formula work, Empirical molecular formulas student notes, Work 8 empirical formulas h o n o 4i, Empirical formula work, Empirical formula work, Empirical and molecular formula work, Calculating empirical and molecular … 2) C8H18. Percent Composition and Molecular Formula Worksheet 1. In this worksheet, we will practice defining, determining, and converting between a compound’s empirical and molecular formulas. 3. 4) C2H6O2. Empirical And Molecular Formula - Displaying top 8 worksheets found for this concept. 1) C6H6. Empirical and Molecular Formulas Worksheet . 10. The empirical formula for the compound having the formula H2C2O4 is [A] C2H2 [B] CO2H [C] COH [D] C2O4H2 [E] COH2 2. Empirical And Molecular Formula. To determine the molecular formula of a compound, you must know the compound’s molar mass. 1. D. Example #3: Find the molecular formula for a compound with an empirical formula of C2H8N and a molecular mass of 46 grams per mole. 12. D Determine the molecular formula for each compound described. [A] CH2 [B] CH [C] C3H5 [D] C2H4 [E] … A compound is 24.7% Calcium, 1.2% Hydrogen, 14.8% Carbon, and 59.3% Oxygen. Molecular formula– a formula showing the types and numbers of atoms combined in a single molecule of a molecular compound. What’s the empirical formula of a molecule containing 65.5% carbon, 5.5% hydrogen, and 29.0% oxygen? Worksheets: Empirical Formula 1. 6) A compound with an empirical formula of C2OH4 and a molar mass of 88 grams per mole. 3) WO2. Empirical and Molecular Formula Worksheet. A compound is 21.20% Nitrogen, 6.06% Hydrogen, 24.30% Sulfur, and 48.45% Oxygen. Empirical Formula . A compound has an empirical formula ofN02 and a molar mass of 92.02 g/mol. If the molar mass of the compound in problem 1 is 110 grams/mole, what’s the molecular formula? 2) C8H18. Write the empirical formula and name the compound. Divide the molecular mass by the empirical formula mass to determine the whole number multiple (x). SHOW WORK ON A SEPARATE SHEET OF PAPER. 2. Objectives: • be able to calculate empirical and molecular formulas . Worksheet: Calculating Empirical & Molecular Formulas 1. 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