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Study Resources (Chemistry)

1) Soluble ionic compounds form strong electrolytes. 2) The hydrated proton attracts only one water molecule. 3) An insoluble compound will dissolve to an appreciable amount in water. 4) A solid forming from a mixture of solutions is called a precipitate. 5) Weak acids almost completely dissociate. 6) In 0.20 M NH3(aq), the concentration of.
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51) What is the general relationship between electron affinity and atomic radii? A) Electron affinity becomes more negative as radii increases. B) Electron affinity becomes more negative as radii decreases. C) Electron affinity becomes positive as radii decreases. D) Electron affinity becomes positive as radii increases. E) The two quantities.
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91) Consider the reaction: CO2(g) + 2HCl(g) → COCl2(g) + H2O(l) ΔH°f -393.51 -92.30 -223.01-285.85 kJ/mol Compute ΔH° for this reaction. A) -994.67 kJ B) 23.05 kJ C) -23.05 kJ D) 69.25 kJ E) -69.25 kJ 92) Given the heat of formation of the following compounds: CO2(g) ΔH°f  =   -393.5 kJ/mol H2O(l) ΔH°f .
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21) What is the ground state electron configuration for iron(III)? A) [Ar]3d5 B) [Ar]4s23d3 C) [Ar]4s13d4 D) [Ar]4s24p3 E) [Ar]4p5 22) What is the general electronic configuration (where n = principal quantum number) that best describes the halogens as a group? A) ns1np6 B) ns2np4 C) ns2sp5 D) ns2np6 E).
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41) Which of the following pairs react to give both a precipitation and a neutralization reaction? A) Ca(OH)2(aq) and H2SO4(aq) B) Mg(OH)2(aq) and H2SO4(aq) C) Sr(OH)2(aq) and HNO3(aq) D) Ba(OH)2(aq) and HNO3(aq) 42) Select a statement that best describes the oxidation process. A) In oxidation process all elements change oxidation state. B) In oxidation process all elements.
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51) A disproportionation reaction is one in which: A) the equation is not balanced B) the same substance is oxidized and reduced C) more of one substance reacts than another D) water must be added E) both reactants are reduced 52) Which of the following represents a disproportionation reaction? A) Br2 + H2O → HOBr.
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61) Experimental evidence for electron spin: A) has not yet been found B) was provided by Uhlenbeck and Goudsmit in 1925 C) came as the result of an experiment with vaporized silver atoms, which was originally designed for another purpose D) is provided each time we make mirror-image molecules, called left and right-handed.
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1) The inner transition elements  include the actinides and the lanthanides. 2) Moseley used X-rays to determine the atomic mass of each element. 3) Ions always adopt the electron configuration of a nobel gas. 4) The covalent radius, metallic radius, and the ionic radius are all equal. 5) The ionization energy is the energy.
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