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131) The elements indicated by the shaded area in the following periodic table are all A) main-group elements. B) p-block elements. C) s-block elements. D) transition elements. 132) The elements indicated by the shaded area in the following periodic table are all A) main-group metals. B) nonmetals. C) p-block elements. D) semimetals. 133) The elements indicated by the shaded area.
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81) Which one of the following compounds is a hydrate? A) H2O2 B) H2SO4 C) CoCl2 ? 6 H2O D) Cu(OH)2 82) Which compound is not considered to be a hydrate? A) [Mg(H2O)6](ClO4)2 B) [Al(H2O)6]Cl3 C) CuSO4 ? H2O D) HOClO2 83) Compounds that absorb water from the atmosphere are said to be A) hygroscopic. B) macroscopic. C) orthoscopic. D) symbiotic. 84) When all water.
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11) Reduction half-reactions with corresponding standard half-cell potentials are shown below. Zn2+(aq) + 2 e– → Zn(s) E° = – 0.76 V Al3+(aq) + 3 e– → Al(s)E° = – 1.66 V The standard potential for the galvanic cell that uses these two half-reactions is ________ V. 12) Based on the half-reactions and their.
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131) The initial concentrations of Ag+(aq) and Cu2+(aq) are both 1.0 M. What will happen to the cell voltage if 5.0 M AgNO3 is added to the compartment containing the 1.0 M Ag+(aq)? The cell voltage will A) decrease. B) increase. C) remain the same. D) can't tell from the information given Consider the following.
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18.1   Multiple-Choice Questions 1) Which individual is generally given credit for the discovery of hydrogen gas? A) Cavendish B) Davy C) Lavoisier D) Priestley 2) The strongest homonuclear single bond is A) H–H B) C–C C) N–N D) O–O 3) Hydrogen, H2, has a very low boiling point. What is the force that must be overcome in order to boil hydrogen? A).
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101) In the picture representing binary hydride AHx, lightly-shaded spheres represent H atoms or ions and darkly-shaded spheres represent atoms or ions of the other element, A. If A is a second-period element, the oxidation state of hydrogen and the oxidation state of element A in the binary hydride shown.
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21) Which one of the following elements forms the strongest π-bonds? A) C B) Si C) Ge D) Sn 22) Which compound exhibits pi bonding? A) F2 B) N2 C) P4 D) S8 23) What is the geometric structure of P4 molecules? A) linear B) rectangular C) square planar D) tetrahedral 24) Which of the group 3A elements is the only one to readily form.
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111) What is the chemical formula of "fool's gold"? A) cinnabar, HgS B) galena, PbS C) gypsum, CaSO4↔2H2O D) pyrite, FeS2 112) What is the structure of rhombic sulfur? A) crown shaped S8 molecules B) discrete S atoms C) discrete S2 molecules D) polymeric Sn chains 113) What are appropriate methods for the generation of H2S? Reaction 1: FeS(s) + 2.
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61) What statement is inconsistent about fullerene? A) It is an allotrope of carbon and the C60 form has soccer ball shape. B) The C60 form of fullerene is a good oxidizing agent. C) The C60 fullerene is a molecular substance. D) The C60 form of fullerene is soluble in nonpolar organic solvents. 62) Which.
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      49) According to Table 17.1, which aqueous metal ion will reduce Ag+, but not Cu2+? A) Fe2+ B) Fe3+ C) Mn2+ D) Sn2+ 50) According to Table 17.1, which will reduce water but not Mg2+? A) Al3+(aq) B) Al(s) C) Na+(aq) D) Na(s) 51) Using Table 17.1, find E° for 2 H2O(l) → 2 H2(g) + O2(g). A) -2.06 V B) -1.23.
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163) The silicate ion shown in the picture below combines with zirconium to form the mineral zircon. What is the formula and charge of the silicate ion? A) SiO32- B) SiO44- C) Si4O104- D) Si4O116- 164) What is the formula and charge of the silicate anion represented by the picture below? A) SiO32- B) SiO44- C) Si2O63- D) Si2O76- 165).
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31) Which group 3A element has the highest electronegativity? A) B B) Al C) Ga D) In 32) The first ionization energy of gallium is greater than that of aluminum and the first ionization energy of thallium is greater than that of indium. A possible explanation for this is: A) This is the normal trend in.
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17.3   Short Answer Questions 1) A galvanic cell uses the reaction Mg(s) + Pb2+(aq) → Mg2+(aq) + Pb(s). Mg(s) → Mg2+(aq) + 2 e– is the ________ half-reaction, which occurs at the ________. 2) In the galvanic cell represented by the shorthand notation Al(s)|Al3+(aq)||Fe3+(aq)|Fe(s) the anode is ________ and the cathode is ________. 3) In the.
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101) Which requires the most electricity (in terms of faradays of charge transferred) per gram of useful product formed? A) electrolysis of aqueous NaCl (chlor-alkali industry) B) electrolysis of molten NaCl/CaCl2 in a Downs cell C) electrorefining copper metal D) production of aluminum in the Hall-Heroult process 102) Which of the following statements concerning the.
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21) Superoxide ion, O2-, peroxide ion, O22-, and oxide ion, O2-, contain ________, ________, and ________ unpaired electrons, respectively. 22) Of O2, O2-, and O22-, the oxygen-oxygen bond length is expected to be longest in ________ and shortest in ________. 23) Hydrogen peroxide can act as an oxidizing agent or a.
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      150) What is the likely formula for the binary compound formed from the elements represented by letters B and D on the periodic table above? A) BD B) B3D C) BD3 D) B2D3 151) What is the likely formula for the binary compound formed from the elements represented by letters B and C on the.
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19.2   Algorithmic Questions 1) What is the most metallic element of group 3A? A) Al B) Ga C) In D) Tl 2) Which of the following elements forms the most ionic binary hydride? A) K B) Mg C) S D) Cl 3) Which of the following elements exhibits the most metallic character? A) In B) Sn C) Sb D) Te 4) Which one of.
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71) Which statement is most inconsistent with the chemistry of silicon? A) In nature, it is generally found combined with oxygen in SiO2 and in various silicate minerals. B) It crystallizes in a diamond-like structure and does not form the graphite-like allotrope. C) It is a hard, gray, semiconducting solid that melts at.
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111) In the following picture of an oxide, darkly-shaded spheres represent oxygen atoms or ions and lightly-shaded spheres represent atoms or ions of a second-row element in its highest oxidation state. Tell whether the oxide is covalent or ionic and whether the oxide is acidic or basic. A) covalent and acidic B).
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11) Electronegativity of main-group elements generally ________. A) increases from left to right across a period and increases down a group B) increases from left to right across a period and decreases down a group C) decreases from left to right across a period and increases down a group D) decreases from left to.
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18.3   Short Answer Questions 1) Hydrogen has three isotopes, , , and , which are called ________, ________, and ________, respectively. 2) An example of an isotope effect is the difference in the dissociation of D2O compared to H2O, as shown below. H2O(l) ? H+(aq) + OH-(aq)     K =1.0 × 10-14 D2O(l).
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