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[DOC File]Honors Chemistry
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Answers to More Chapter 3 Study Questions. 1. a) In 1 mole Na2SO4: 2 mole Na = 2(23.0 g) = 46.0 g; 1 mole S = 32.1 g; 4 mol O = 4(16.0 g) = 64.0 g. Molar mass = 46.0 + 32.1 + 64.0 = 142.1 g/mole . Na: 46.0/142.1 = 32.4% Na. S: 32.1/142.1 = 22.6% S. O: 64.0/142.1 = 45.0% O. 32.4% Na, 22.6% S, 45.0% O. b) 2.00 g S = 8.85 g cpd. 2. Mass of Sn = 33.40 g – 31.50 g = 1.90 g Sn. Mass of O = 33.91 g ...
chapter 3 chemistry test answers

[DOC File]Test: 'Chemical Equations' (General Chemistry)
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General Chemistry: Chapter 7 Test. 1. In endothermic reactions: a. energy is released c. heat is given off. b. products have less energy than reactants d. products have more energy than reactants . 2. Because it takes less energy to get them started, most chemical reactions are exothermic. a. True b. False. 3. What happens to atoms in all chemical reactions? a. They are destroyed and re ...
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[DOC File]Answer Key: Chemical Reactions Review
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reactants on the left, products on the right. iodine, bromine, chlorine, fluorine, oxygen, nitrogen, hydrogen. a whole number in front of an element or compound in a chemical equation; used to balance the equation.
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[DOC File]Answers to Chapters 1,2,3,4,5,6,7,8,9 - End of Chapter ...
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Chapter 3 6. Chapter 4 8. Chapter 5 10. Chapter 6 12. Chapter 7 14. Chapter 8 16. Chapter 9 18. Chapter 1 . Question Number Answer Level 1 Head Reference for Answer Difficulty 1 C. What is an Information System? M 2 D What are Data, Information and Knowledge E 3 E What are Data, Information and Knowledge M 4 C What are Data, Information and Knowledge – What is Ethics E 5 Data What …
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[DOC File]AP Chemistry Multiple Choice and Free Response Question ...
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AP Chemistry Multiple Choice and Free Response Question answer key for Chapters 3 and 4. Peter Demmin * Fourth edition. Multiple choice # Chapter 3 Chapter 4 1 A D 2 D B 3 D B 4 D B 5 A A 6 C D 7 D D 8 D E 9 A B 10 B B 11 B B 12 B C 13 A C 14 B B 15 A E 16 A A 17 E D 18 D E 19 D A 20 B B 21 C E 22 A C 23 E C 24 B E 25 C A Ch 3 free response . 26 a. Interaction between molecules including ...
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[DOC File]South Pasadena • AP Chemistry
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Chapter 1 - Chapter 3 ( Chemistry Basics. Ch1- Ch 3 STUDY QUESTIONS and PROBLEMS. Test will be 20 MC (1 points each) and 2 Free Response (12 and 13 points)= total 45 points. 1. Name the polyatomic ions: C2H3O2-IO4-OH-HCO3-Cr2O72-ClO3- 2. What are the formulas of the polyatomic ions: phosphate nitrite . sulfate cyanide. sulfite chlorite. 3. Write the ions present in the following salts and ...
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Chapter 3 chemistry test answers