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13.3   Algorithmic Questions 1) The Henry's law constant for helium gas in water at 30°C is 3.70 × 10-4 M/atm. When the partial pressure of helium above a sample of water is 0.650 atm, the concentration of helium in the water is __________ M. A) 5.69 × 10-4 B) 1.76 × 103 C) 1.30 D).
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61) Which of the following liquids will have the lowest freezing point? A) pure H2O B) aqueous glucose (0.050 m) C) aqueous CoI2 (0.030 m) D) aqueous FeI3 (0.030 m) E) aqueous NaI (0.030 m) 62) Which of the following liquids will have the highest freezing point? A) pure H2O B) aqueous glucose (0.050 m) C) aqueous CoI2 (0.030.
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11) The dopant atoms in an n-type semiconductor have __________ electrons than the host material. 12) Semiconductor particles with diameters of 1-10 nm are called __________. 13) Write the chemical formulas for both polyethylene and the monomer from which it is formed. 14) Nylon is formed by the reaction of a __________ with.
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10.4   Short Answer Questions 1) Abnormally high blood pressure is called __________. 2) The temperature and pressure specified by STP are __________ °C and __________ atm. 3) How many molecules are there in 4.00 L of oxygen gas at 500 °C and 50.0 torr? 4) The volume of HCl gas required to react.
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11.2   Bimodal Questions 1) Based on molecular mass and dipole moment of the five compounds in the table below, which should have the highest boiling point? A) CH3CH2CH3 B) CH3OCH3 C) CH3Cl D) CH3CHO E) CH3CN 2) The heating curve shown was generated by measuring the heat flow and temperature for a solid as it.
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41) What types of intermolecular forces exist between NH3 and CBr4? A) dispersion forces and dipole-dipole forces B) dispersion forces and dipole-induced dipole forces C) dispersion forces and hydrogen bonds D) dispersion forces, hydrogen bonds, and induced dipole-induced dipole forces E) dispersion forces, hydrogen bonds, and dipole-induced dipole forces 42) What types of intermolecular forces exist.
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21) When NaCl dissolves in water, aqueous Na+ and Cl- ions result. The force of attraction that exists between Na+ and H2O is called a(n) __________ interaction. A) dipole-dipole B) ion-ion C) hydrogen bonding D) ion-dipole E) London dispersion force 22) __________ are particularly polarizable. A) Small nonpolar molecules B) Small polar molecules C) Large nonpolar molecules D) Large polar.
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11) Which statement about atmospheric pressure is false? A) As air becomes thinner, its density decreases. B) Air actually has weight. C) With an increase in altitude, atmospheric pressure increases as well. D) The warmer the air, the lower the atmospheric pressure. E) Atmospheric pressure prevents water in lakes, rivers, and oceans from boiling away. 12).
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61) Of the following, __________ is the least volatile. A) CBr4 B) CCl4 C) CF4 D) CH4 E) C6H14 62) A volatile liquid is one that __________. A) is highly flammable B) is highly viscous C) is highly hydrogen-bonded D) is highly cohesive E) readily evaporates 63) In general, the vapor pressure of a substance increases as __________ increases. A) surface tension B) molecular.
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11) Of the following substances, only __________ has London dispersion forces as its only intermolecular force. A) CH3OH B) NH3 C) H2S D) CH4 E) HCl 12) Of the following substances, only __________ has London dispersion forces as its only intermolecular force. A) H2O B) CCl4 C) HF D) CH3COOH E) PH3 13) Of the following substances, only __________ has London dispersion.
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51) Of the concentration units below, only __________ is temperature dependent. A) mass % B) ppm C) ppb D) molarity E) molality 52) A solution contains 11% by mass of sodium chloride. This means that __________. A) there are 11 g of sodium chloride in in 1.0 mL of this solution B) 100 g of the solution contains.
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11) Steel is A) an alloy of iron. B) pure iron. C) oxidized iron. D) a mixture of iron and silver. E) a liquid at room temperature. 12) Which one of the following is a property of most metals? A) low melting point B) brittleness C) high electronegativity D) thermal conductivity E) acidic oxides 13) Which statement about steel is false? A) It.
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31) Of the following, only __________ is not a polymer. A) cellulose B) nylon C) starch D) protein E) stainless steel 32) Which one of the following is an addition polymer with the same structure as polyethylene except that one hydrogen on every other carbon is replaced by a benzene ring? A) polyvinyl chloride B) polypropylene C) polystyrene D) polyurethane E).
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12.1   Multiple-Choice Questions 1) A solid has a very high melting point, great hardness, and poor electrical conduction. This is a(n) __________ solid. A) ionic B) molecular C) metallic D) covalent network E) metallic and covalent network 2) Which of the following is not a type of solid? A) ionic B) molecular C) supercritical D) metallic E) covalent-network 3) Crystalline solids differ.
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41) The kinetic-molecular theory predicts that pressure rises as the temperature of a gas increases because __________. A) the average kinetic energy of the gas molecules decreases B) the gas molecules collide more frequently with the wall C) the gas molecules collide less frequently with the wall D) the gas molecules collide more energetically.
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41) Calculate the mole fraction of phosphoric acid (H3PO4) in a 25.4% (by mass) aqueous solution. A) 0.0589 B) 0.0626 C) 0.259 D) 1.00 E) 4.14 42) Calculate the molality of a 10.0% (by mass) aqueous solution of hydrochloric acid. A) 0.274 m B) 2.74 m C) 3.05 m D) 4.33 m E) The density of the solution is needed.
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21) Which of the following substances is least likely to dissolve in water? A) HOCH2CH2OH B) CHCl3 C)    O ? CH3(CH2)9CH D) CH3(CH2)8CH2OH E) CCl4 22) Which of the following substances is more likely to dissolve in CH3OH? A) CCl4 B) Kr C) N2 D) CH3CH2OH E) H2 23) Which one of the following substances is more likely to dissolve in CCl4? A) CBr4 B).
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12.2   Bimodal Questions 1) __________ solids consist of atoms or molecules held together by dipole-dipole forces, London dispersion forces, and/or hydrogen bonds.              A) Ionic B) Molecular C) Metallic D) Covalent-network E) Metallic and covalent-network 2) Gallium crystallizes in a primitive cubic unit cell. The length of the unit cell edge is 3.70 Å. The radius.
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11.1   Multiple-Choice Questions 1) Crystalline solids __________. A) have their particles arranged randomly B) have highly ordered structures C) are usually very soft D) exist only at high temperatures E) exist only at very low temperatures 2) In liquids, the attractive intermolecular forces are __________. A) very weak compared with kinetic energies of the molecules B) strong enough to.
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13.1   Multiple-Choice Questions 1) The dissolution of water in octane (C8H18) is prevented by __________. A) London dispersion forces between octane molecules B) hydrogen bonding between water molecules C) dipole-dipole attraction between octane molecules D) ion-dipole attraction between water and octane molecules E) repulsion between like-charged water and octane molecules 2) When argon is placed in a.
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11.3   Algorithmic Questions 1) The enthalpy change for converting 1.00 mol of ice at -50.0°C to water at 70.0°C is __________ kJ. The specific heats of ice, water, and steam are 2.09 J/g-K, 4.18 J/g-K, and 1.84 J/g-K, respectively. For H2O, ΔHfus = 6.01 kJ/mol, and ΔHvap = 40.67 kJ/mol A) 12.28 B).
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21) Metallic solids do not exhibit __________. A) excellent thermal conductivity B) excellent electrical conductivity C) variable hardness D) extreme brittleness E) variable melting point 22) Which property of metals cannot be explained with the electron-sea model? A) shine B) high thermal conductivity C) high electric conductivity D) malleability and ductility E) trends in melting points 23) If the electronic structure of.
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31) Which one of the following substances will not have hydrogen bonding as one of its intermolecular forces? A) B) C) D) E) 32) What intermolecular force is responsible for the fact that ice is less dense than liquid water? A) London dispersion forces B) dipole-dipole forces C) ion-dipole forces D) hydrogen bonding E) ionic bonding 33).
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13.2   Bimodal Questions 1) The process of solute particles being surrounded by solvent particles is known as __________. A) salutation B) agglomeration C) solvation D) agglutination E) dehydration 2) Pairs of liquids that will mix in all proportions are called __________ liquids. A) miscible B) unsaturated C) polar liquids D) saturated E) supersaturated 3) The solubility of Ar in water at 25°C is.
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11.4   Short Answer Questions 1) In general, intramolecular forces determine the __________ properties of a substance and intermolecular forces determine its __________ properties. 2) London Dispersion Forces tend to __________ in strength with increasing molecular weight. 3) The direct conversion of a solid to a gas is called __________. 4) The initial discovery of.
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10.1   Multiple Choice Questions 1) Which of the following statements about gases is false? A) Gases are highly compressible. B) Distances between molecules of gas are very large compared to bond distances within molecules. C) Non-reacting gas mixtures are homogeneous. D) Gases expand spontaneously to fill the container they are placed in. E) All gases are.
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