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Study Resources (Chemistry)

13.4   Short Answer Questions 1) The minimum energy needed to convert reactants to products is the ________. 2) A substance that increases the rate of a reaction by lowering the activation reaction is called a(n) ________. 3) Equilibrium is reached when the rates of the forward and reverse reactions are ________..
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11.3   Matching Questions Indicate the effect of each change upon the pressure of a gas. A) decreases B) no change C) increases 1) decrease in volume (n, T constant) 2) The temperature is doubled. 3) The volume and the Kelvin temperature are reduced by one-half. 4) A leak occurs and gas escapes. 5) increase in volume, increase in temperature 6).
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11.4   True/False Questions 1) The kinetic energy of a gas sample is directly proportional to the Kelvin temperature of the gas. 2) The air we breathe is about 21% oxygen. 3) Gas law calculations normally require the use of the Kelvin temperature scale. 4) Carbon dioxide and water vapor together account.
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15.3   Matching Questions Match the oxidation number with the correct species. A) 1- B) +3 C) 0 D) +2 E) +1 F) +4 G) -1 H) +5 I) -3 1) calcium ion 2) I2 3) chromium(III) 4) nitrogen in NH3 5) chlorine in Cl2O 6) hydrogen in H2O 7) sodium in sodium chloride 8) chlorine in carbon tetrachloride, CCl4 9) carbon in carbon dioxide 10) phosphorus in phosphate ion,.
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15.5   Short Answer Questions 1) Is the combustion of carbon an example of an oxidation or a reduction reaction? 2) Write the oxidation-reduction reaction for the electrochemical reaction of zinc with mercuric oxide, HgO. 3) What is the oxidation number of Mn in MnO4-? 4) In the following reaction, ________ is.
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11.5   Short Answer Questions 1) Nitrogen makes up about ________ percent of the atmosphere. 2) A barometer is usually filled with ________. 3) One atmosphere is the same as ________ mmHg. 4) The pressure unit 1 mmHg is the same as the pressure unit ________. 5) At 125 °C, the pressure.
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14.2   Bimodal Questions 1) The correct formula for sulfuric acid is ________. A) H2SO4 B) H2SO3 C) H2SO4- D) H2SO3- E) SO42- 2) What is the [OH-] of a solution with [H3O+] = 2.0 × 10-5 M? A) 2.0 × 10-5 B) 5.0 × 10-5 C) 5.0 × 10-10 D) 1.0 × 10-14 E) 2.0 × 10-10 3) What is.
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14.1   Multiple Choice Questions 1) According to the Arrhenius concept, if HNO3 were dissolved in water, it would act as ________. A) a base B) an acid C) a source of hydroxide ions D) a source of H- ions E) a proton acceptor 2) The name given to an aqueous solution of HBr is ________. A).
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11.2   Bimodal Questions 1) A barometer is a device for measuring ________. A) atmospheric pressure B) blood pressure C) gas pressure in a container D) gas pressure in the lung E) vapor pressure 2) A kiloPascal is a unit of ________. A) pressure B) temperature C) energy D) mass E) volume 3) A container of variable volume contains oxygen gas at.
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11) In the following reaction, what substance is oxidized? 2Mg + O2 → 2MgO A) oxygen B) water C) magnesium D) magnesium oxide E) air 12) In the following reaction, what happens to the aluminum metal? Fe2O3 + 2Al → Al2O3 + 2Fe A) It is oxidized. B) It is reduced. C) It becomes soluble in water. D) It becomes.
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12.1   Multiple Choice Questions 1) The O-H bond in water is polar because A) it is an ionic bond. B) oxygen is much more electronegative than hydrogen. C) oxygen occupies more space than hydrogen. D) hydrogen is much more electronegative than oxygen. E) it is a hydrogen bond. 2) A hydrogen bond is A) an attraction.
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41) Which is the correct solubility product expression for the solution of barium carbonate in water? A) Ksp = [Ba2+] [CO3-]2 B) Ksp = [Ba2+] [CO32-]3 C) Ksp = [Ba]2 [CO3-] D) Ksp = E) Ksp = [Ba2+] [CO32-] 42) Identify the correct form of the solubility product for silver sulfate, Ag2SO4. A) Ksp.
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16.1   Multiple Choice Questions 1) All of the isotopes of elements with atomic numbers of 84 and higher are radioactive because A) strong repulsions between their electrons make them unstable. B) strong repulsions between the protons make their nuclei unstable. C) strong repulsions between their nuclei make them unstable. D) their mass number is.
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11) In the reaction of nitrogen and hydrogen to give ammonia, all the reactants and products are ________.  A) gases B) liquids C) solids D) boiling E) frozen 12) A chemical reaction has reached equilibrium when A) the concentrations of reactants and products are equal. B) all reactants have been converted to products. C) all products have.
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12.2   Bimodal Questions 1) Acetic acid can be classified as a(n) ________. A) gas B) solid C) weak electrolyte D) strong electrolyte E) ionic compound 2) The molarity of a solution of 5.00 g of KCl in 150. mL of solution is ________. A) 0.0382 M B) 0.0667 M C) 0.447 M D) 0.132 M E) 33.3 M 3) How many.
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11) Which of the following statements is NOT true about water? A) Water molecules are attracted to each other by hydrogen bonds. B) Gasoline is insoluble in water. C) Water molecules are covalently bonded. D) Water dissolves polar substances well. E) The water molecule is linear. 12) A solution containing a large concentration of dissolved.
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51) In the activity series, silver is below hydrogen, and magnesium is above hydrogen. This means that ________. A) silver can give electrons to hydrogen B) magnesium can give electrons to silver C) hydrogen can give electrons to magnesium D) hydrogen ions can give electrons to silver E) silver ions can give electrons to.
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12.3   Matching Questions Identify the term defined in each description. A) ionic equation B) hydrogen bonding C) nonelectrolyte D) net ionic equation E) dissociation F) solute G) solution H) solvent I) unsaturated J) saturated K) weak electrolyte L) strong electrolyte 1) a solution that contains the highest amount of solute that dissolves at a given temperature 2) the major attraction between water molecules 3).
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15.4   True/False Questions 1) A substance is oxidized when it loses electrons. 2) A substance is reduced if it gains electrons. 3) When manganese metal forms manganese ion, Mn2+, it is reduced. 4) When copper ion is used to form copper metal, the copper ion is reduced. 5) When carbon monoxide.
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15.2   Bimodal Questions 1) In the following reaction, oxidation occurs on which type of atom? 3Mg + N2 → Mg3N2 A) magnesium B) nitrogen C) oxygen 2) In the following reaction, what substance is reduced? 2Fe2O3 + 3C → CO2 + 4Fe A) oxygen in the iron oxide B) iron in the iron(III) oxide C) elemental carbon D) carbon.
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13.1   Multiple Choice Questions 1) A catalyst is A) a reactant in a chemical reaction. B) a product in a chemical reaction. C) a substance that speeds up a reaction without being consumed in the reaction. D) a substance that increases the energy of the products. E) a substance that decreases the energy of the.
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11) In an electrochemical cell, the electrode at which oxidation takes place is called the ________. 12) The portion of the electrochemical cell that is used to maintain electrical neutrality in the two separated half-cells is called the ________. 13) In an electrochemical cell, the electrons in the electrical circuit.
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12.4   True/False Questions 1) A dental amalgam is an example of a solid solution. 2) Carbon tetrachloride, CCl4, is soluble in water. 3) Sodium acetate is a weak electrolyte. 4) Hydrochloric acid is a strong electrolyte. 5) Glucose is a nonelectrolyte. 6) A solution of a nonelectrolyte contains only ions. 7).
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31) Tin reacts with nitric acid according to the following equation. What substance is the reducing agent? Sn(s) + 4HNO3(aq) → SnO2(s) + 4NO2(g) + 2H2O(g) A) Sn(s) B) H in HNO3 C) N in HNO3 D) O in HNO3 E) H2(g) 32) The correct coefficients for the oxidation-reduction reaction shown below are ________. ___CH4(g) +.
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41) Stomach acid consists mainly of what substance dissolved in water? A) HCl B) HBr C) CH3COOH D) H2SO4 E) NH3 42) When hydrochloric acid reacts with sodium carbonate, what gas results? A) CH3COOH B) CO C) CO2 D) NaOH E) H2O 43) When potassium hydroxide reacts with sulfuric acid, one product is ________. A) NaCl B) KCl C) H2O D) KOH E) H2SO4 44).
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