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Study Resources (Chemistry)

16.4   True/False Questions 1) Exposure to radiation is unavoidable because some radioactive elements occur naturally. 2) One symptom of radiation sickness is an increased production of red blood cells. 3) If the half-life of hydrogen-3 is 11.8 years, after two half-lives the radioactivity of a sample will be reduced to one-half of the.
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17.1   Multiple Choice Questions 1) Compounds that have the same molecular formula but different arrangements of atoms are called ________. A) isomers B) isotopes C) indicators D) isozymes E) isometrics 2) What is the name of the alkyl group CH3-CH2-CH2-? A) propane B) methyl C) ethane D) ethyl E) propyl 3) What is the IUPAC name of this alkane? A) 4-ethyl-2,2-dimethylpentane B) 2-ethyl-4,4-dimethylpentane C).
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41) The conjugate base of H2S is ________. A) OH- B) H2O C) HOS D) HS- E) HS2 42) Bicarbonate ion, HCO3-, is an example of a(n) ________ substance. A) neutral B) amphoteric C) strongly acidic D) strongly basic E) gaseous 43) Bicarbonate ion, HCO3-, is an example of a(n) ________. A) weak base B) strong acid C) gas D) Arrhenius acid E) Arrhenius base 44) When.
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31) The value of the equilibrium constant for the combination of nitrogen and oxygen to make NO is 2 ? 10-9.  What does this tell you about the concentrations of materials in the equilibrium mixture? A) The concentration of products exceeds the concentration of reactants. B) The concentrations of reactants and products.
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15.5   Short Answer Questions 1) Is the combustion of carbon an example of an oxidation or a reduction reaction? 2) An oxidation-reduction reaction that takes place spontaneously when the two half-reactions are connected by a wire is called a(n) ________. 3) When an electrochemical cell spontaneously generates an electric current, the cell is.
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41) In the reaction of silver nitrate and sodium chloride to produce solid silver chloride, sodium ions and nitrate ions are ________. A) spectator ions B) solvents C) molecules D) gases E) liquids 42) Calcium chloride reacts with sodium hydroxide to form solid calcium hydroxide, Ca(OH)2. The balanced net ionic equation is A) Ca+2(aq) + 2OH-(aq) +.
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14.1   Multiple Choice Questions 1) According to the Arrhenius concept, if HNO3 were dissolved in water, it would act as ________. A) a base B) an acid C) a source of hydroxide ions D) a source of H- ions E) a proton acceptor 2) The name given to an aqueous solution of HBr is ________. A) hydrogen bromide B).
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11) Carbon tetrachloride, CCl4, is soluble in water. 12) Glucose is a nonelectrolyte. 13) For most solids, solubility decreases as the temperature of the solution increases. 14) The solubility of a gas in water decreases as the temperature increases. 15) The higher the pressure of a gas above a liquid in a closed container,.
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14.4   True/False Questions 1) A buffer is a solution that tends to maintain a neutral pH. 2) A solution of NaOH will turn phenolphthalein pink. 3) A solution of NaOH will feel slippery. 4) A solution of HCl will taste bitter. 5) In any water solution, [H3O+] [OH-] = 1 × 10-7. 6) An ammonium chloride.
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16.5   Short Answer Questions 1) One symbol for the β particle is . Another symbol for the same particle is ________. 2) A sample of phosphorus-32 with an activity of 2.0 mCi produces ________ disintegrations per second. (1 Ci = 3.7 ? 1010 disintegrations/sec.) 3) The common unit of radioactivity which is used.
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15.4   True/False Questions 1) A substance is oxidized when it loses electrons. 2) A substance is reduced if it gains electrons. 3) When manganese metal forms manganese ion, Mn2+, it is reduced. 4) When copper ion is used to form copper metal, the copper ion is reduced. 5) When oxygen is in its elemental form,.
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16.1   Multiple Choice Questions 1) All of the isotopes of elements with atomic numbers of 84 and higher are radioactive because A) strong repulsions between their electrons make them unstable. B) strong repulsions between the protons make their nuclei unstable. C) strong repulsions between their nuclei make them unstable. D) their mass number is.
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14.2   Bimodal Questions 1) The correct formula for sulfuric acid is ________. A) H2SO4 B) H2SO3 C) H2SO4- D) H2SO3- E) SO42- 2) What is the pH of a solution with [H3O+] = 1.0 × 10-9 M? A) 1.0 × 10-5 B) -9.0 C) 5.0 D) -5.0 E) 9.0 3) What is the pH of a solution with [OH-] = 1.0 ×.
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15.3   Matching Questions Match the oxidation number with the correct species. 1) calcium ionA) +5 2) I2B) 0 3) chromium(III)C) +3 4) nitrogen in NH3D) +1 5) chlorine in Cl2OE) +4 6) hydrogen in H2OF) +2 7) sodium in sodium chlorideG) -1 8) chlorine in carbon tetrachloride, CCl4H) I) -3 1- 9) carbon in carbon dioxide 10) phosphorus in phosphate ion, PO43- 11) iron in.
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51) In the activity series, silver is below hydrogen, and magnesium is above hydrogen. This means that ________. A) silver can give electrons to hydrogen B) magnesium can give electrons to silver C) hydrogen can give electrons to magnesium D) hydrogen ions can give electrons to silver E) silver ions can give electrons to magnesium 52).
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41) The equilibrium for the solubility of silver sulfate is A) AgSO4 (s) ? Ag+(aq) + 2SO42-(aq) B) Ag2SO4 (s) ? Ag+(aq) + 2SO42-(aq) C) Ag2SO4 (s) ? 2Ag+(aq) + SO42-(aq) D) Ag2SO4 (s) ? 2Ag+(aq) + 2SO42-(aq) E) Ag2SO4 (s) ? Ag2+(aq) + SO42-(aq) 42) The solubility product constant is most useful when examining the.
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11) The process in which a nucleus spontaneously breaks down by emitting radiation is known as ________. A) transmutation B) transformation C) fusion D) a chain reaction E) radioactive decay 12) A nuclear equation is balanced when A) the same elements are found on both sides of the equation. B) the sum of the mass numbers and the.
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13.3   True/False Questions 1) An equilibrium constant greater than 1 for a reaction indicates that the reaction favors formation of the products. 2) An equilibrium constant Kc = 1 × 107 for a reaction indicates that the reaction favors product formation. 3) If the equilibrium constant for a reaction is 1 × 10-5,.
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16.3   Matching Questions Indicate whether each of the following is characteristic of the fission or fusion process. A) fission B) fusion C) both fission and fusion 1) A large nucleus is split into smaller nuclei. 2) Very high temperatures must be achieved to initiate the reaction. 3) This nuclear process provides the energy of the sun. 4) This.
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13.4   Short Answer Questions 1) The rule or principle that describes the effect of changing reaction conditions on an equilibrium is known as ________ principle. 2) The minimum energy needed to convert reactants to products is the ________. 3) A substance that increases the rate of a reaction by lowering the activation reaction.
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12.2   Bimodal Questions 1) Acetic acid can be classified as a(n) ________. A) gas B) solid C) weak electrolyte D) strong electrolyte E) ionic compound 2) The molarity of a solution of 5.00 g of KCl in 150. mL of solution is ________. A) 0.0382 M B) 0.0667 M C) 0.447 M D) 0.132 M E) 33.3 M 3) How many grams of.
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12.4   True/False Questions 1) Lithium chloride is soluble in water. 2) The molarity of a solution is the mass of solute divided by the solution volume. 3) The m/m % concentration of a solution is the mass of the solution divided by its volume multiplied by 100. 4) The m/m % concentration of a.
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21) Refrigerating perishable foods affects biochemical reactions by A) increasing concentrations of antioxidants. B) removing bacteria. C) decreasing the rate of reactions affecting spoilage. D) catalyzing the removal of harmful chemicals from the foods. E) improving the appearance of the foods. 22) In a catalytic converter in an automobile, the reaction of carbon monoxide with.
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12.3   Matching Questions Identify the term defined in each description. A) weak electrolyte B) strong electrolyte C) hydrogen bonding D) net ionic equation E) solvent F) dissociation G) solute H) unsaturated I) ionic equation J) nonelectrolyte K) solution L) saturated 1) a solution that contains the highest amount of solute that dissolves at a given temperature 2) the major attraction between water molecules 3) a solution.
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14.3   Matching Questions Identify each of the following compounds as an acid, a base, or neither. A) neither B) base C) acid 1) HCl 2) NaOH 3) NH3 4) H2SO4 5) CO32- 6) NaCl 7) CN- 8) H2CO3 In the following solutions, is the [OH-] greater than, less than, or equal to the [H3O+]? A) less than B) greater than C) equal to 9) acid 10) base Page 1 .
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12.5   Short Answer Questions 1) In the following equation, ________ will precipitate from solution. BaCl2 + H2SO4 → BaSO4 + 2HCl 2) The number of moles of a compound dissolved in one liter of a solution is called the ________. 3) A substance that carries an electric current when dissolved in water is called.
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15.2   Bimodal Questions 1) In this reaction, what is the substance oxidized? Zn + 2 HCl → ZnCl2 + H2 A) chlorine B) zinc chloride C) hydrogen D) zinc E) oxygen 2) In the following reaction, oxidation occurs on which type of atom? 3Mg + N2 → Mg3 N2 A) magnesium B) nitrogen C) oxygen 3) In the following reaction, what substance is.
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13.1   Multiple Choice Questions 1) A catalyst is A) a reactant in a chemical reaction. B) a product in a chemical reaction. C) a substance that speeds up a reaction without being consumed in the reaction. D) a substance that increases the energy of the products. E) a substance that decreases the energy of the products. 2).
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13.2   Bimodal Questions 1) What is the value of the equilibrium constant Kc if the concentration of NO and NOBr are and the concentration of Br2 is 3.0 M? 2NOBr(g) ? 2NO(g) + Br2(g) A) 0.33 B) 9.0 C) 0.010 D) 3.0 E) 2.0 2) For the following reaction, the equilibrium constant Kc is 2.0.
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