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Study Resources (Chemistry)

121) What is the geometry around the central atom in the following molecular model of TeF5-? A) trigonal bipyramidal B) octahedral C) square pyramidal D) square planar 122) What is the geometry around the central atom in the following molecular model of XeF4? A) trigonal bipyramidal B) octahedral C) square pyramidal D) square planar 123) What is the geometry around.
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      90) Which element, indicated by letter on the periodic table above, has a 2+ ion with the electron configuration [Ar]3d10? A) A B) B C) C D) D 91) Which element, indicated by letter on the periodic table above, has a 1+ ion with the electron configuration [Xe]6s2 4f14 5d10? A) A B) B C) C D) D 92) Which.
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8.1   Multiple-Choice Questions 1) At 298 K the average kinetic energy is the same for H2, He, and N2. The gas with the highest average velocity is A) H2. B) He. C) N2. D) All have the same average velocity. 2) The nutritional calorie (abbreviated Cal) is equal to A) 1 mcal. B) 4.184 J. C) 4.184 cal. D) 1.
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7.1   Multiple-Choice Questions 1) Covalent bonding is a A) gain of electrons. B) loss of electrons. C) transfer of electrons. D) sharing of electrons. 2) Which electrostatic forces hold atoms together in a molecule? A) electron-electron forces B) electron-nucleus forces C) nucleus-nucleus forces D) all three forces 3) At the equilibrium bond length A) the attractive forces holding the atoms together are.
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    110) Atoms of which element, indicated by letter on the periodic table above, would be expected to have the smallest first ionization energy, Ei1? A) A B) B C) C D) D 111) Atoms of which element, indicated by letter on the periodic table above, would be expected to have the highest first ionization energy,.
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111) What is the geometry around the central atom in the following molecular model of CCl4? A) linear B) bent C) trigonal pyramidal D) tetrahedral 112) What is the geometry around the central atom in the following molecular model of NH4+? A) linear B) bent C) trigonal pyramidal D) tetrahedral 113) What is the geometry around the central atom in.
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7.3   Short Answer Questions 1) Among the compounds H3C–CH3, H2C=CH2, and HC?CH, the compound with the strongest carbon-carbon bond is ________, and the compound with the longest carbon-carbon bond is ________. 2) Ionic compounds consist of a single three-dimensional network of ions that are attracted to one another by strong ________ and.
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81) Which group of elements are found as diatomic molecules? A) alkali metals B) alkaline earth metals C) halogens D) noble gases 82) Both chlorine and bromine can be produced in the laboratory by reacting the halides with manganese(IV) oxide. If the following equation is balanced in an acidic solution, then the MnO2 is acting.
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111) The reaction represented in the above drawing is likely to be A) nonspontaneous at all temperatures. B) nonspontaneous at low temperatures and spontaneous at high temperatures. C) spontaneous at low temperatures and non spontaneous at high temperatures. D) spontaneous at all temperatures. The following drawing is a representation of the exothermic reaction in which.
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6.2   Algorithmic Questions 1) How many electrons are in the outermost shell of the  Ga3+ ion in its ground state? A) 2 B) 3 C) 6 D) 18 2) Which ion does not have a noble gas configuration in its ground state? A) Sc3+ B) Al3+ C) Ga3+ D) As3- 3) Of the following, which element has the highest first ionization.
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61) What is the molecular geometry of BrF4-? A) seesaw B) square planar C) square pyramidal D) tetrahedral 62) Which of the following should be nonlinear? A) only I B) only II C) only III D) II and III 63) What is the molecular geometry of AsCl3? A) T-shaped B) tetrahedral C) trigonal planar D) trigonal pyramidal 64) What is the O-N-O bond angle in.
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121) Which picture corresponds to iodine? A) picture (a) B) picture (b) C) picture (c) D) picture (d) 122) Which picture corresponds to potassium fluoride? A) picture (a) B) picture (b) C) picture (c) D) picture (d) The following pictures represent alkali halide salts.     123) Which salt has the highest lattice energy? A) picture (a) B) picture (b) C) picture (c) D) picture (d) 124) Which.
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61) Ethyl alcohol is produced by the fermentation of glucose, C6H12O6. C6H12O6(s) → 2 C2H5OH(l) + 2 CO2(g)     ΔH° = -69.1 kJ Given that the enthalpy of formation is -277.7 kJ/mol for C2H5OH(l) and -393.5 kJ/mol for CO2(g), find the enthalpy of formation for C6H12O6. A) -1411.5 kJ/mol B) -1273.3 kJ/mol C) -740.3 kJ/mol D) -602.1.
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51) Calculate the energy change for the formation of LiCl(s) from its elements in their standard states and the following tabulated information: A) +1305.7 kJ/mol B) +296.9 kJ/mol C) -400.3 kJ/mol D) -627.2 kJ/mol 52) Calculate the lattice energy for NaCl(s) using a Born-Haber cycle and the following information: A) +34.8 kJ/mol B) +690.3 kJ/mol C) +787.2.
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81) Which is not a spontaneous process? A) combustion of gasoline to produce carbon dioxide and water B) diffusion of perfume in a room C) dissolution of sodium chloride in water D) freezing of water at 1°C 82) Which combination always results in a reaction being spontaneous? A) ΔH is negative and ΔS is negative. B) ΔH.
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8.3   Short Answer Questions 1) The law of conservation of energy is also known as the ________ law of thermodynamics. 2) Energy can be classified as either ________ energy (energy of motion) or ________ energy (stored energy). 3) Kinetic energy increases with increasing ________ and increasing ________. 4) The SI unit for.
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131) What are the bond angles in the following molecular model of SO32-? A) less than 109.5° B) 109.5° C) less than 120° but greater than 109.5° D) 120° 132) What are the bond angles in the following molecular model of H3O+? A) less than 109.5° B) 109.5° C) less than 120° but greater than 109.5° D) 120° 133) What.
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7.2   Algorithmic Questions 1) Of the following elements, which has the highest electronegativity? A) S B) Cl C) Ti D) Se 2) Of the following elements, which has the lowest electronegativity? A) Sr B) I C) Ba D) At 3) The electronegativity is 2.1 for H and 1.9 for  Pb. Based on these electronegativities PbH4 would be expected to A).
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61) Which of the following ionic compounds would be expected to have the highest lattice energy? A) LiCl B) NaCl C) KCl D) RbCl 62) Which ionic compound would be expected to have the highest lattice energy? A) Na2O B) MgO C) Al2O3 D) CO2 63) Which ionic compound would be expected to have the highest lattice energy? A) NaCl B) MgO C).
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6.3   Short Answer Questions 1) Using shorthand notation, the ground-state electron configuration for Sr2+ is predicted to be ________. 2) Using shorthand notation, the ground-state electron configuration for Co2+ is predicted to be ________. 3) Using shorthand notation, the ground-state electron configuration for Tl+ is predicted to be ________. 4) Using shorthand notation, the.
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71) The alkali metals K, Rb, and Cs are commercially produced by A) chemical reduction of their molten salts. B) electrolysis of their molten salts. C) thermal decomposition of their molten metal halides. D) thermal decomposition of their molten metal oxides. 72) An incorrect statement about the alkaline earth metals is: A) Melting points generally decrease.
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