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Standardized Test Preparation. Preview. Multiple Choice Short Answer Extended Response. Chapter 7. Standardized Test Preparation. Multiple Choice. 1. Which of the following compounds does not contain a polyatomic ion? A. sodium carbonate B. sodium sulfate C. sodium sulfite

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  1. Standardized Test Preparation Preview • Multiple Choice • Short Answer • Extended Response

  2. Chapter 7 Standardized Test Preparation Multiple Choice 1. Which of the following compounds does not contain a polyatomic ion? A. sodium carbonate B. sodium sulfate C. sodium sulfite D. sodium sulfide

  3. Chapter 7 Standardized Test Preparation Multiple Choice 1. Which of the following compounds does not contain a polyatomic ion? A. sodium carbonate B. sodium sulfate C. sodium sulfite D. sodium sulfide

  4. Chapter 7 Standardized Test Preparation Multiple Choice 2. The correct formula for ammonium phosphate is A. (NH4)3PO4. B. (NH4)2PO4. C. NH4PO4. D. NH4(PO4)2.

  5. Chapter 7 Standardized Test Preparation Multiple Choice 2. The correct formula for ammonium phosphate is A. (NH4)3PO4. B. (NH4)2PO4. C. NH4PO4. D. NH4(PO4)2.

  6. Chapter 7 Standardized Test Preparation Multiple Choice 3. When writing the formula for a compound that contains a polyatomic ion, A. write the anion’s formula first. B. use superscripts to show the number of polyatomic ions present. C. use parentheses if the number of polyatomic ions is greater than 1. D. always place the polyatomic ion in parentheses.

  7. Chapter 7 Standardized Test Preparation Multiple Choice 3. When writing the formula for a compound that contains a polyatomic ion, A. write the anion’s formula first. B. use superscripts to show the number of polyatomic ions present. C. use parentheses if the number of polyatomic ions is greater than 1. D. always place the polyatomic ion in parentheses.

  8. Chapter 7 Standardized Test Preparation Multiple Choice 4. The correct name for NH4CH3COO is A. ammonium carbonate. B. ammonium hydroxide. C. ammonium acetate. D. ammonium nitrate.

  9. Chapter 7 Standardized Test Preparation Multiple Choice 4. The correct name for NH4CH3COO is A. ammonium carbonate. B. ammonium hydroxide. C. ammonium acetate. D. ammonium nitrate.

  10. Chapter 7 Standardized Test Preparation Multiple Choice 5. Which of the following is the correct formula for iron(III) sulfate? A. Fe3SO4 B. Fe3(SO4)2 C. Fe2(SO4)3 D. 3FeSO4

  11. Chapter 7 Standardized Test Preparation Multiple Choice 5. Which of the following is the correct formula for iron(III) sulfate? A. Fe3SO4 B. Fe3(SO4)2 C. Fe2(SO4)3 D. 3FeSO4

  12. Chapter 7 Standardized Test Preparation Multiple Choice 6. The molecular formula for acetylene is C2H2. The molecular formula for benzene is C6H6. The empirical formula for both is A. CH. B. C2H2. C. C6H6. D. (CH)2.

  13. Chapter 7 Standardized Test Preparation Multiple Choice 6. The molecular formula for acetylene is C2H2. The molecular formula for benzene is C6H6. The empirical formula for both is A. CH. B. C2H2. C. C6H6. D. (CH)2.

  14. Chapter 7 Standardized Test Preparation Multiple Choice 7. Which of the following shows the percentage composition of H2SO4? A. 2.5% H, 39.1% S, 58.5% O B. 2.1% H, 32.7% S, 65.2% O C. 28.6% H, 14.3% S, 57.1% O D. 33.3% H, 16.7% S, 50% O

  15. Chapter 7 Standardized Test Preparation Multiple Choice 7. Which of the following shows the percentage composition of H2SO4? A. 2.5% H, 39.1% S, 58.5% O B. 2.1% H, 32.7% S, 65.2% O C. 28.6% H, 14.3% S, 57.1% O D. 33.3% H, 16.7% S, 50% O

  16. Chapter 7 Standardized Test Preparation Multiple Choice 8. Which of the following compounds has the highest percentage of oxygen? A. CH4O B. CO2 C. H2O D. Na2CO3

  17. Chapter 7 Standardized Test Preparation Multiple Choice 8. Which of the following compounds has the highest percentage of oxygen? A. CH4O B. CO2 C. H2O D. Na2CO3

  18. Chapter 7 Standardized Test Preparation Multiple Choice 9. The empirical formula for a compound that is 1.2% H, 42.0% Cl, and 56.8% O is A. HClO. B. HClO2. C. HClO3. D. HClO4.

  19. Chapter 7 Standardized Test Preparation Multiple Choice 9. The empirical formula for a compound that is 1.2% H, 42.0% Cl, and 56.8% O is A. HClO. B. HClO2. C. HClO3. D. HClO4.

  20. Chapter 7 Standardized Test Preparation Short Answer 10. When a new substance is synthesized or is discovered experimentally, the substance is analyzed quantitatively. What information is obtained from this typical analysis, and how is this information used?

  21. Chapter 7 Standardized Test Preparation Short Answer 10. When a new substance is synthesized or is discovered experimentally, the substance is analyzed quantitatively. What information is obtained from this typical analysis, and how is this information used? Answer:The percentage composition is obtained and used to determine the substance’s empirical formula.

  22. Chapter 7 Standardized Test Preparation Short Answer 11. An oxide of selenium is 28.8% O. Find the empirical formula. Assuming that the empirical formula is also the molecular formula, name the oxide.

  23. Chapter 7 Standardized Test Preparation Short Answer 11. An oxide of selenium is 28.8% O. Find the empirical formula. Assuming that the empirical formula is also the molecular formula, name the oxide. Answer:SeO2; selenium dioxide

  24. Chapter 7 Standardized Test Preparation Extended Response 12. What is an empirical formula, and how does it differ from a molecular formula?

  25. Chapter 7 Standardized Test Preparation Extended Response 12. What is an empirical formula, and how does it differ from a molecular formula? Answer:The empirical formula is the simplest whole-number ratio of the atoms in a chemical formula. The molecular formula is the actual number of atoms of each element in a chemical formula. The two formulas differ by an integer factor.

  26. Chapter 7 Standardized Test Preparation Extended Response 13. What are Stock system names based on?

  27. Chapter 7 Standardized Test Preparation Extended Response 13. What are Stock system names based on? Answer:The Stock system is based on the oxidation number of the cation.

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