A balloon containing Xe is filled with the same number e Exams\" af atoms as ano

Question

A balloon containing Xe is filled with the same number e Exams" af atoms as another balloon containing He. Which statement is true for these balloons at the same temperature and pressure? 62. Which statements best describe the energy change for the (A) The balloons have the same volume. (B) The balloons have the same mass of gas. reaction associated with this energy profile? reactants (C) The balloons contain gases with the same density (D) The balloons contain atoms with the same average speed Reaction Progress (A) exothermic reaction; AH>0 (B) exothermic reaction; AHP (C) endothermic reaction; >0 (D) endothermic reaction; / 0 For which reaction does the enthalpy change equal the heat of formation,Art of the product formed? 500 mL balloon is filled with He gas at 2S °C with an atmospheric pressure of 1.04 atm. How many moles of He are in the balloon? (B) 23 mol (D) 0.064 mol (C) 0.76 mol 63. 57. Which of the largest molar 3 gases are at the 500 1000 1500 2000 64. How much heat is released to Molar Mass/ mol 44.01 the surroundings when 5.00 g (A) A (B) B (CC (D) D of CO, is produced in the reaction of propane (CH) with an excess of oxygen? Which gas will have the highest rate of effusion? (A) 0(g) (B) H:0G) (C) CO-g) (D) Arlg) 58. (A) 84.1 kJ (C) 740 kJ (B) 252 k (D) 757 kJ 59. Which statement is true for this oxidation-reduction reaction? 2Fe" +21. 2Fe2+ + 12 (A) I ion is reduced and its oxidation number increase. (B) I ion is reduced and its oxidation number decreases. (C) I ion is oxidized and its oxidation number increase. (D) I ion is oxidized and its oxidation number decreases. What is the oxidation number of manganese, Mn, in 65, what is 1p for this AHP at 25°C/kJ-mol H:00) N(g) NHdg) 4NH (g)+30g) 2Ndg) + 6H0(1) | 46.19 (A) -239.6 kJ (C) -1530 kJ (B) -332.0k (D) -1900 kJ 60. Ca(MnO4)h? 66. Using the information below, what is Aff for the reaction. 2CMyg)+50dg C(s) + O2(g) CO2(g) (A)738.4 kJ 4COE)+2HOD? 61. 100 J of energy as heat is transferred to equal mass samples of four metals at the same initial temperature. Which metal reaches the highest temperature? (The specific heat of each metal is given in parentheses in units of J g.c-1) AH-393.5kJ (B) -1192 k (D) -2372 k (A) iron (0.450) (C)-1919 k (B) gold (0.129) (D) aluminum (0.902) (C) copper (0.385)

Explanation / Answer

55. (A)

56. (D)

57. (A)

58. (B)

59. (C)

60. (D)

61. (B)

62. (C)

63. (B)

64. (A)

65. (C)

66. (D)

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