Question

Section 114 Empirical and Molecular Formula:s In your textbook, resd obout percent Answer the folloving qpestions. z. Deseribe how to find tdue percent composition of a compound if you know the tmass of a semple of a compound nnd the mass of each element in the sample In your textbook, read about emplrical and molecular Circle the tetter of the choice thát best answers the question. formulas 3. Which information about a cormpound can you use to begin to d etermine the emptriesl and molecular formulas of the compound? a. mass of he compournd b. number of elements in the compound c. percent composition of thve compourvd d. volumve of the compound es of c 0.600 moles of oxygen. What must you do to determine the mole ratio of the elements in the empirical formula of the compound? a. Multiply each mole value by 0.300 mol. b. Muttipty each mole value by 0.600 mol. c. Divide each mole value by 0.300 mol d. Divide each mole value by 0.600 mol s. The mole ratio of carbon to hydrogen to oxygen in a compound is I mol C: 2 mol H: 1 mol O. What is the empirical formula of the compound? a. CHO c. CHO 6. You calculate the mole ratio of oxygen to aluminum in a compound to be 1.5 mol O: 1 mol Al. What should you do to determine the mole ratio in the empirical formula of the compound? a. Multiply cach mole value by 1.5 b. Multiply each mole value by 2 c. Divide each mole value by 1.5, d. Divide cach mole value by 2. 7. What is the relationship between the molecular formula and the empirical formula of a compound? a. (molecular formula)(empirical formula) n b. molecular formula-empirical formula c. molecular formula (empirical formula)n d. molecular formula empirical formula 64 Chemistry: Matter and Change . Chapter 11 Study Guide for Content Mia nter 11 63