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Study Resources (Chemistry)

13.2   True/False Questions 1) It is possible to determine a given reaction's mechanism without performing any experiments of any kind. 2) For chemical reactions to occur at all, "old" bonds must be broken and "new" bonds must form. 3) Adding a catalyst increases the rate of reaction by providing the additional energy needed.
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Match each sulfate salt solution in the questions with the corresponding number of sulfate ion moles that appears in the list below. Assume all salts dissolve in water.   A) 0.0001 B) 0.0002 C) 0.0003   25) 500 mL 0.0002 M sodium sulfate solution 26) 500 mL 0.0002 M magnesium sulfate solution 27) 500 mL 0.0002 M aluminum.
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12.4   Matching Questions Match each of the aqueous solutions in the questions  with the corresponding molarity that appears in the list below.   A) 1.33 M B) 0.60 M C) 2.80 M D) 0.50 M E) 4.4 M F) 0.80 M   1) 2.0 moles of glucose in 4,000 mL solution   2) 0.7 moles NaCl in 250 mL solution   3) 0.5 moles.
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21) Which of the following has the lowest hydration energy? A) sodium chloride B) magnesium chloride C) aluminum chloride D) silicon tetrachloride 22) The statement "like dissolves like" justifies why ________. A) water will dissolve ethyl alcohol B) octane will dissolve methane C) water will not dissolve fats D) All of the above statements are correct. 23) Which of the.
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13.1   Multiple Choice Questions 1) Which of the following can be done to increase the likelihood that a chemical reaction will take place? A) decrease the average speed of the reacting molecules B) induce more collisions between reacting molecules C) remove all the water from the reaction mixture D) break the reaction up into a.
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12.2   True/False Questions 1) Ca2+ is expected to have a greater energy of hydration than K+. 2) There is no difference between the "molarity" and the "percent composition" of a given solution. 3) Nonpolar solutes will usually dissolve in polar solvents. 4) Polar solutes will usually dissolve in polar solvents. 5) C8H18 will dissolve in.
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10.4   Matching Questions Match each element in every anion with its oxidation state that appears in the list below.   A)-2 B)+1 C) 0 D) +3 E) +6 F) +5 G) -3 H)-1 I)+4 J) +7 K) +2 1) manganese in the permanganate anion 2) phosphorus in the phosphate 3) carbon in the carbonate anion 4) nitrogen in sodium nitrite 5) chromium in potassium chromate 6) sulfur in aluminum.
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Match each term in the questions with the corresponding definition that appears in the list below.   A) a solution of two metals B) the spherical structure formed by detergent molecules when dissolved in water C) a measure of the disorder in a system D) the nonpolar end of the detergent E) the polar end of.
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10.2   True/False Questions 1) Electricity is the flow of electrons. 2) In a chemical reaction the easiest electrons to be transferred are the core electrons (also called inner shell electrons). 3) When drawing dot structures, lone pairs of electrons are assigned completely to the atom on which they are drawn on the dot.
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11) Which statement is true about equilibrium? A) The forward reaction rate is greater than the reverse reaction rate. B) The reverse reaction rate is greater than the forward reaction rate. C) The forward reaction rate is equal to the reverse reaction rate. D) Either A or B depending on the reaction. 12) The equilibrium.
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Match each compound with the corresponding nitrogen oxidation state that appears in the list below.   A) +2 B) 0 C) +3 D) +4 E) +5 F) -3   46) sodium nitrite 47) sodium nitrate 48) sodium nitride 49) nitrogen dioxide 50) nitrogen gas 51) dinitrogen pentoxide 52) nitrogen monoxide Match each compound  with the corresponding carbon oxidation state that appears in the list below.   A) +2 B).
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12.3   Short Answer Questions 1) How does the phrase "like dissolves like" help to explain why a solute like sodium chloride (NaCl) and a solvent like water should form a solution? 2) What are two physical properties of water that make it an especially useful and common solvent? 3) Use the general rule.
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51) Which of the following is true about enzymes? A) They speed up reactions in a selective fashion. B) They are very large proteins. C) They contain specifically shaped pockets that fit only specific reactant molecules. D) All of the above are true. 52) Generally in a biochemical reaction the first step involves ________. A) the.
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21) A hydrophobic group will be attracted to water. 22) Molarity is defined as moles of solute per liter of solvent. 23) A solution prepared by dissolving 24 g potassium sulfate in 150 mL total solution has a molarity of 0.92 M. 24) Hydrocarbons, such as pentane C5H12, are water soluble. 25) The addition.
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14.1   Multiple Choice Questions 1) Which of the following statements best describes the rate of the "forward" (i.e., left-to-right) reaction as it approaches equilibrium? A) The rate increases as equilibrium is approached. B) The rate decreases as equilibrium is approached. C) The rate remains constant. D) The rate slows down, then increases, as equilibrium is.
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11.3   Matching Questions Match each set of two variables of an ideal gas that appears in the questions with the corresponding relationship (proportional or inversely proportional) that appears in the list below.   A) proportional B) inversely proportional   1) pressure and volume 2) pressure and temperature 3) volume and temperature 4) volume and # of moles 5) pressure and.
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13.4   Matching Questions Match the rate of each reaction in the questions with the overall order that appears in the list below.   A) 3 B) 1 C) 4 D) 2 E) 0   1) Rate = -k[A]2[B]-1 2) Rate = -k[A]1[B]2 3) Rate = -k[A][B] 4) Rate = -k[A]2[B]2 5) Rate = -k[A][B]-1 6) Rate = -k[A]3[B]0 7) Rate = -k[A]3/[B] 8) Rate = -k[A]/[B] .
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13.3   Short Answer Questions 1) Calculate a value for ΔErxn for a chemical reaction, if the reactants have an energy of +300 kJ/mol and the products have an energy of +100 kJ/mol. Is this reaction exothermic or endothermic? 2) Calculate a value for ΔErxn for a chemical reaction if the reactants have.
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11.1   Multiple Choice Questions 1) Pressure is defined as ________. A) the amount of force per unit area B) the amount of force per unit volume C) the amount of work per unit area D) the amount of work per unit volume 2) 1 atm is equal to ________. A) 760 cm Hg B) 760 mm Hg C).
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41) The charge of sulfur in the sulfate ion is ________. A) +6 B) +7 C) -2 D) +4 42) The charge of chlorine in the perchlorate ion is ________. A) +8 B) +7 C) -1 D) +6 43) In which case is chlorine in its highest oxidation state? A) sodium hypochlorite B) sodium chloride C) sodium perchlorate D) sodium chlorate 44) In which compound.
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10.3   Short Answer Questions 1) Assign the oxidation state of: a)each rhenium, in Re2O7 b)zirconium, in ZrCl4 c)sulfur in Na2S2O3 d)iodine in KIO3 2) Assign the oxidation state of: a)barium, in BaCl2 b)sodium, in Na2O c)selenium, in H2SeO3 d)aluminum, in Al2O3 3) Assign oxidation states to each of the atoms in the following chemical species: a)SiO2 b)NO- c)TlCl d)V2O5 4) Assign oxidation states to each of.
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Match each compound with the corresponding chlorine oxidation state that appears in the list below.   A) +1 B) +7 C) -1 D) +5 E) +3 35) sodium chloride 36) sodium hypochlorite 37) sodium chlorate 38) sodium chlorite 39) sodium perchlorate Match each compound with the corresponding sulfur oxidation state that appears in the list below..   A) +2 B) -2 C) +4 D) 0 E) +6   40) sodium.
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41) Which of the following is true about the activation energy? A) It may increase by decreasing the temperature. B) It may decrease by decreasing the temperature. C) It may increase by increasing the concentration of reactants. D) It is practically independent of both temperature and concentration of reactants. 42) If the kinetic energy of.
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