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31) Molality is calculated by dividing grams of solute by kilograms of solution. 32) Colligative properties are independent of the amount of solute in solution. 33) Adding a nonvolatile solute to a liquid will cause boiling point depression and freezing point elevation. 34) A sample of salt water will freeze at a higher.
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Introductory Chemistry, 4e (Tro)   True/False Questions 1) Acids have a bitter taste. 2) Acids produce H? ions in solution. 3) Acids turn litmus paper blue. 4) The main component of stomach acid is sulfuric acid. 5) The main component of vinegar is acetic acid. 6) Bases have a bitter taste. 7) Bases feel slippery. 8) Bases feel slippery because.
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11) The Bronsted-Lowry definition of a base is: A) a proton donor. B) a proton acceptor. C) produces H? in solution. D) produces OH? in solution. E) none of the above 12) The Bronsted-Lowry definition of an acid is: A) a proton donor. B) a proton acceptor. C) produces H? in solution. D) produces OH? in solution. E) none of the.
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Multiple Choice Questions 1) Which of the following is NOT a property of acids? A) Acids have a slippery feel. B) Acids have a sour taste. C) Acids turn litmus paper red. D) Acids dissolve many metals. E) All of the above are properties of acids. 2) Which of the following statements about acids are TRUE? 1.  An.
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11) When dynamic equilibrium is achieved, the concentrations of reactants is equal to the concentrations of the products. 12) When dynamic equilibrium is achieved, the rate of the forward and backward reactions go to zero. 13) The Equilibrium Constant, Keq, is a way to quantify the relative concentrations of the reactants and.
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21) Sugar solutions conduct electricity because the dissolved particles are molecules. 22) Vitamin C is a water-soluble vitamin, so it is likely that this vitamin is polar. 23) A solution that is 35 percent by mass NaCl contains 35 grams of NaCl dissolved in 100 grams of water. 24) A solution that is.
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51) Which molecule listed below has a nonpolar covalent bond? A) NaCl B) H2O C) H2 D) all of the compounds E) none of the compounds 52) Which molecule listed below has a polar covalent bond? A) NaCl B) H2O C) H2 D) all of the compounds E) none of the compounds 53) Which molecule listed below is a polar molecule? A) NH3 B).
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Introductory Chemistry, 4e (Tro)   True/False Questions 1) Straws work because sucking creates a pressure difference. 2) Gases are a collection of particles in constant, unpredictable motion. 3) Gas particles act independently of each other. 4) Gas particles lose energy every time they collide with each other or the container wall. 5) There is a large distance.
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11) Increasing the intermolecular forces of a liquid will do which of the following? A) increase the viscosity B) decrease the evaporation rate C) increase the surface tension D) decrease the vapor pressure E) all of the above 12) You can increase the vapor pressure of a liquid by: A) increasing temperature. B) increasing the viscosity. C) establishing dynamic.
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Introductory Chemistry, 4e (Tro)   True/False Questions 1) The tragedy at Lake Nyos in Cameroon, West Africa was due to the sudden release of excessive amounts of nitrogen dissolved in the lake water. 2) The tragedy at Lake Nyos in Cameroon, West Africa, was due to the sudden release of excessive amounts of carbon.
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11) Solubility is formally defined as the amount of a compound that can be dissolved in water. 12) A saturated solution holds the maximum amount of solute under the solution conditions. 13) A supersaturated solution is unstable and crystallization usually occurs. 14) Salt water is an example of a strong electrolyte solution. 15) A.
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Multiple Choice Questions 1) Intermolecular forces are responsible for: A) the taste sensations. B) the shape of protein molecules. C) the function of DNA. D) the existence of liquids and solids. E) all of the above 2) Which state of matter has a high density and an indefinite shape? A) solids B) liquids C) gases D) both solids and liquids E) none.
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21) The solubility of gases in water: A) is independent of temperature. B) increases with increasing temperature. C) decreases with increasing temperature. D) gases are not soluble in water. E) none of the above 22) The solubility of a gas in a liquid can always be increased by: A)  increasing the temperature of the solvent. B) decreasing.
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51) Which intermolecular force found in CCl2H2 is the strongest? A) dispersion forces B) dipole-dipole forces C) hydrogen bonding D) X-forces E) none of the above 52) What types of forces exist between I2 molecules? A) dispersion forces B) dipole-dipole forces C) hydrogen bonding D) ion-dipole forces E) none of the above 53) Dry ice (solid CO2) is which type of solid? A).
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Multiple Choice Questions 1) Which of the following statements about pressure is FALSE? A) Pressure is caused by gas molecules colliding with surfaces. B) The atmosphere has a pressure as the components of air collide with surfaces. C) After creating a pressure difference, the atmospheric pressure can push liquid up a straw. D) A deep.
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41) What is the molecular geometry of SiH4? A) bent B) linear C) tetrahedral D) trigonal pyramidal E) not enough information 42) What is the molecular geometry of CCl4? A) bent B) linear C) tetrahedral D) trigonal pyramidal E) not enough information 43) What is the molecular geometry of SCl2? A) bent B) linear C) tetrahedral D) trigonal pyramidal E) not enough information 44) What is the molecular.
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Introductory Chemistry, 4e (Tro)   True/False Questions 1) Equilibrium involves the ideas of sameness and constancy. 2) Living things are in equilibrium with their surroundings. 3) The rate of a chemical reaction is the amount of reactant that changes to product in a specific amount of time. 4) Collisions between reactant molecules do not always lead.
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11) Viscosity increases with increased intermolecular force because the molecules attract each other strongly which hinders the flow. 12) Evaporation is decreased by increasing the intermolecular forces. 13) Compounds with very high vapor pressures must have very minimal intermolecular forces. 14) The rate of evaporation will increase if you pour a liquid out.
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Introductory Chemistry, 4e (Tro)   True/False Questions 1) Intermolecular forces are the attractive forces between atoms within a compound. 2) The shapes of protein molecules are determined by intermolecular forces. 3) Intermolecular forces determine if a substance is a solid, liquid or gas at room temperature. 4) Gases typically have high densities in comparison to solids. 5).
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Algorithmic Questions 1) Calculate the mass percent of a NaCl solution prepared by mixing 47.0 g NaCl with 125.0 mL of pure water. A) 27.3 B) 72.3 C) 47.0 D) 37.6 E) none of the above 2) Calculate the molarity of a KCl solution prepared by dissolving 0.525 moles of KCl in 250. mL of water. A) 0.476 B).
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41) Which statement below is false? A) A hydrogen bond is the strongest of the intermolecular forces. B) A hydrogen atom must be bonded directly to fluorine, oxygen, or nitrogen to exhibit hydrogen bonding. C) The large electronegativity difference between hydrogen and an F, O, or N atom is essential for the formation.
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