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1. Which of the following accurately describes the conditions of a closed system? a. Both energy and matter can move into or out of the system. b. Only matter can move into or out of the system. c. Only energy can move into or out of the system. d. Neither energy nor matter can move into or out of the system. e. None of the above. 2. Which of the following accurately describes the conditions of an isolated system? a. Both energy and matter can move into or out of the system. b. Only matter can move into or out of the system. c. Only energy can move into or out of the system. d. Neither energy nor matter can move into or out of the system. e. None of the above. 3. Which of the following reactions is/are endothermic? Choose ALL that apply. a. H2(g) + Cl(g) → 2HCI(g) + 185 kJ b. 302(g) + 286 kJ → 203(g) с. C(5) + O-(g) — СO,(9) d. N2(g) + 202(g) → 2NO2(g) e. 238U → 4He + 234TH + heat AHº = - 394 kJ AHº = +33.2 kJ f. H2O(s) + heat → → H,O(1I)

1. Which of the following accurately describes the conditions of a closed system? a. Both energy and matter can move into or out of the system. b. Only matter can move into or out of the system. c. Only energy can move into or out of the system. d. Neither energy nor matter can move into or out of the system. e. None of the above. 2. Which of the following accurately describes the conditions of an isolated system? a. Both energy and matter can move into or out of the system. b. Only matter can move into or out of the system. c. Only energy can move into or out of the system. d. Neither energy nor matter can move into or out of the system. e. None of the above. 3. Which of the following reactions is/are endothermic? Choose ALL that apply. a. H2(g) + Cl(g) → 2HCI(g) + 185 kJ b. 302(g) + 286 kJ → 203(g) с. C(5) + O-(g) — СO,(9) d. N2(g) + 202(g) → 2NO2(g) e. 238U → 4He + 234TH + heat AHº = - 394 kJ AHº = +33.2 kJ f. H2O(s) + heat → → H,O(1I)

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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1. Which of the following accurately describes the conditions of a closed system? a. Both energy and matter can move into or out of the system. b. Only matter can move into or out of the system. C. Only energy can move into or out of the system. d. Neither energy nor matter can move into or out of the system. e. None of the above. 2. Which of the following accurately describes the conditions of an isolated system? a. Both energy and matter can move into or out of the system. b. Only matter can move into or out of the system. c. Only energy can move into or out of the system. d. Neither energy nor matter can move into or out of the system. e. None of the above. 3. Which of the following reactions is/are endothermic? Choose ALL that apply. а. На(g) + Cl2(g) — 2HCI(g) + 185 kJ b. 302(g) + 286 kJ → 203(g) c. C(s) + O2(g) → d. N2(g) + 202g) е. 238U -> 4He + 234TH + heat → CO2(g) 2NO2(g) AHº = - 394 kJ AH = +33.2 kJ f. H,O(s) + heat → H,0(1) 4. If the heat of formation of sodium chloride is -411 kJ/mol, then the heat of reaction for 1.25 mol of sodium chloride is a. - 514 kJ d. +329 kJ b. - 411 kJ e. +411 kJ C. - 329 kJ f. +514 kJ 5. A 3.00-g candle is consumed in heating 145-g of water from 20.0°C to 55.0°C. If you ignore loss of heat to the air, the energy produced per gram of candle would be d. 20.6 kJ e. 68.7 kJ а. 2.06 kJ b. 7.07 kJ c. 6.87 kJ f. 206 kJ
Transcribed Image Text:1. Which of the following accurately describes the conditions of a closed system? a. Both energy and matter can move into or out of the system. b. Only matter can move into or out of the system. C. Only energy can move into or out of the system. d. Neither energy nor matter can move into or out of the system. e. None of the above. 2. Which of the following accurately describes the conditions of an isolated system? a. Both energy and matter can move into or out of the system. b. Only matter can move into or out of the system. c. Only energy can move into or out of the system. d. Neither energy nor matter can move into or out of the system. e. None of the above. 3. Which of the following reactions is/are endothermic? Choose ALL that apply. а. На(g) + Cl2(g) — 2HCI(g) + 185 kJ b. 302(g) + 286 kJ → 203(g) c. C(s) + O2(g) → d. N2(g) + 202g) е. 238U -> 4He + 234TH + heat → CO2(g) 2NO2(g) AHº = - 394 kJ AH = +33.2 kJ f. H,O(s) + heat → H,0(1) 4. If the heat of formation of sodium chloride is -411 kJ/mol, then the heat of reaction for 1.25 mol of sodium chloride is a. - 514 kJ d. +329 kJ b. - 411 kJ e. +411 kJ C. - 329 kJ f. +514 kJ 5. A 3.00-g candle is consumed in heating 145-g of water from 20.0°C to 55.0°C. If you ignore loss of heat to the air, the energy produced per gram of candle would be d. 20.6 kJ e. 68.7 kJ а. 2.06 kJ b. 7.07 kJ c. 6.87 kJ f. 206 kJ
6. What is the most appropriate method to measure the rate of reaction in the following chemical system? Zn(s) + H,SO,(aq): H2(g) + ZnSO,(aq) Choose ALL that apply. a. Change in colour d. Change in pressure b. Change in conductivity c. Change in mass e. Change in temperature f. None of the above 7. In the following chemical reaction the rate of consumption of liquid propane is observed to be 4 mol/(L-min): C3H3(1) + 502(g) → 3CO2(g) + 4H,0(g). What is the rate of production of carbon dioxide? a. 4 mol/(L-min) b. 6 mol/(L-min) c. 8 mol/(L·min) d. 10 mol/(L-min) e. 12 mol/(L·min) 14 mol/(L-min) f. 8. If, for the reaction ax + bY → products, the rate law is determined to be r = k[X]°[Y]', then the overall order of reaction is а. 1 d. 4 b. 2 е. 5 f. 6 С. 3 9. Refer to the reaction below. How much heat is released if 184.0 g of sodium metal reacts? 2Na(s) + 2H,0(1) → H2(g) + 2NAOH(aq) + 150 kJ а. 106.8 J d. 1201 kJ b. 16.01 kJ e. 2402 kJ C. 600.5 kJ f. 4804 kJ
Transcribed Image Text:6. What is the most appropriate method to measure the rate of reaction in the following chemical system? Zn(s) + H,SO,(aq): H2(g) + ZnSO,(aq) Choose ALL that apply. a. Change in colour d. Change in pressure b. Change in conductivity c. Change in mass e. Change in temperature f. None of the above 7. In the following chemical reaction the rate of consumption of liquid propane is observed to be 4 mol/(L-min): C3H3(1) + 502(g) → 3CO2(g) + 4H,0(g). What is the rate of production of carbon dioxide? a. 4 mol/(L-min) b. 6 mol/(L-min) c. 8 mol/(L·min) d. 10 mol/(L-min) e. 12 mol/(L·min) 14 mol/(L-min) f. 8. If, for the reaction ax + bY → products, the rate law is determined to be r = k[X]°[Y]', then the overall order of reaction is а. 1 d. 4 b. 2 е. 5 f. 6 С. 3 9. Refer to the reaction below. How much heat is released if 184.0 g of sodium metal reacts? 2Na(s) + 2H,0(1) → H2(g) + 2NAOH(aq) + 150 kJ а. 106.8 J d. 1201 kJ b. 16.01 kJ e. 2402 kJ C. 600.5 kJ f. 4804 kJ
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