Chat with AIExam 17: How Chemicals React
Exam 1: Patterns of Motion and Equilibrium94 Questions
Exam 2: Newtons Laws of Motion109 Questions
Exam 3: Momentum and Energy128 Questions
Exam 4: Gravity, Projectiles, and Satellites114 Questions
Exam 5: Fluid Mechanics120 Questions
Exam 6: Thermal Energy and Thermodynamics100 Questions
Exam 7: Heat Transfer and Change of Phase115 Questions
Exam 8: Static and Current Electricity144 Questions
Exam 9: Magnetism and Electromagnetic Induction105 Questions
Exam 10: Waves and Sound120 Questions
Exam 11: Light146 Questions
Exam 12: Atoms and the Periodic Table128 Questions
Exam 13: The Atomic Nucleus and Radioactivity124 Questions
Exam 14: Elements of Chemistry49 Questions
Exam 15: How Atoms Bond and Molecules Attract150 Questions
Exam 16: Mixtures141 Questions
Exam 17: How Chemicals React118 Questions
Exam 18: Two Classes of Chemical Reactions182 Questions
Exam 19: Organic Compounds98 Questions
Exam 20: Rocks and Minerals170 Questions
Exam 21: Plate Tectonics and Earths Interior175 Questions
Exam 22: Shaping Earths Surface175 Questions
Exam 23: Geologic Timereading the Rock Record145 Questions
Exam 24: The Oceans, Atmosphere, and Climatic Effects172 Questions
Exam 25: Driving Forces of Weather145 Questions
Exam 26: The Solar System87 Questions
Exam 27: Stars and Galaxies84 Questions
Exam 28: The Structure of Space and Time55 Questions
Exam 29: Prologue: the Nature of Science22 Questions
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Many people hear about atmospheric ozone depletion and wonder why we don't simply replace that which has been destroyed. Knowing about CFCs and how catalysts work, explain how this would not be a lasting solution.
(Multiple Choice)
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(80) A friend argues that if mass were really conserved he would never need to refill his gas tank. What explanation do you offer your friend?
(Multiple Choice)
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(77) How many moles of H2 bonds are broken if you react nitrogen with hydrogen according to the following reaction? N2 + 3H2 → 2 NH3
(Multiple Choice)
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(90) How many grams of gallium are there in a 145 gram sample of gallium arenside, GaAs?
(Multiple Choice)
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(84) What is the mass of a water molecule, H2O, in atomic mass units?
(Multiple Choice)
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(79) Which of the following statements best describes the concept of entropy?
(Multiple Choice)
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(89) How many oxygen molecules are needed to make 10 carbon dioxide molecules according to the following balanced chemical equation? 2 CO + O2 → 2 CO2
(Multiple Choice)
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(77) Given the following energy profiles, which of the following reactions is endothermic? 
R= reactants P = products
R= reactants P = products (Multiple Choice)
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(76) For the following balanced reaction, which of the following is a solid? 2 Na(l)+ Cl2(g)→ 2 NaCl(s)
(Multiple Choice)
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(85) How much energy, in kilojoules, is released or absorbed from the reaction of one mole of nitrogen, N2, with three moles of molecular hydrogen, H2, to form two moles of ammonia, NH3? H-N (bond energy: 389 kJ/mol)
H-H (bond energy: 436 kJ/mol)
N 
N (bond energy: 946 kJ/mol)
N 
N + H-H + H-H → N H3 + N H3
N (bond energy: 946 kJ/mol)
N N + H-H + H-H → N H3 + N H3 (Multiple Choice)
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(73) Use the bond energies below to determine whether the following reaction is exothermic or endothermic: H2 + Cl2 → 2 HCl
H-H (bond energy: 436 kJ/mol)
Cl-Cl (bond energy: 243 kJ/mol)
H-Cl (bond energy: 431 kJ/mol)
(Multiple Choice)
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(83) What is the environmentally unfriendly component of chlorinated fluorocarbons that ultimately damages ozone?
(Multiple Choice)
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(79) A 1.00 carat pure diamond has a mass of 0.20 grams. How many carbon atoms are there within this diamond?
(Multiple Choice)
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