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1 2 3 The enthalpy of combustion for 3 moles of ethane at SATP conditions is negative Type your answer... kJ. Which one of the following would cause 100mL of water to cool by 5.0°C in an isolated system? The decomposition of 0.19mol of N₂O4(g) The formation of 0.19mol of N₂O4(g) The decomposition of 9.2mol of ethyne gas The formation of 9.2mol of ethyne gas Please use the following thermochemical equation for the next question. 2 A+ B₂ 3C + 150 kJ The AH for the reaction 6C4A + 2 B2 would be: +150 kJ - 150 kJ +300 kJ - 300 kJ

1 2 3 The enthalpy of combustion for 3 moles of ethane at SATP conditions is negative Type your answer... kJ. Which one of the following would cause 100mL of water to cool by 5.0°C in an isolated system? The decomposition of 0.19mol of N₂O4(g) The formation of 0.19mol of N₂O4(g) The decomposition of 9.2mol of ethyne gas The formation of 9.2mol of ethyne gas Please use the following thermochemical equation for the next question. 2 A+ B₂ 3C + 150 kJ The AH for the reaction 6C4A + 2 B2 would be: +150 kJ - 150 kJ +300 kJ - 300 kJ

Chemistry: Principles and Practice
Chemistry: Principles and Practice
3rd Edition
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Chapter5: Thermochemistry
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1 2 3 4 5 The enthalpy of combustion for 3 moles of ethane at SATP conditions is negative. Type your answer..... 6 Which one of the following would cause 100mL of water to cool by 5.0°C in an isolated system? The decomposition of 0.19mol of N₂O4(8) The formation of 0.19mol of N₂O4(g) C The AH for the reaction 6C4A + 2 B2 would be: +150 kJ - 150 kJ +300 kJ - 300 kJ C 10000 The decomposition of 9.2mol of ethyne gas The formation of 9.2mol of ethyne gas A system that is 35% efficient uses coal as a fuel. Under the conditions of the system, the enthalpy of combustion is -76kJ/g of coal. What mass of coal would be needed to heat 400mL of water by 85.0°C? 1.9 g 5.4 g 1.9 kg 5.4 kg C Please use the following thermochemical equation for the next question. 2 A+ B₂ 3 C + 150 kJ A system uses ethanol as a fuel. What is the efficiency of the system if it requires 40.0g of ethanol to heat a 150.0g block of iron by 150°C? 0.943% 3.13% O 3.19% O 8.53% Which one of the following compounds is the most thermally stable? ethyne _kJ. dinitrogen tetroxide hydrogen bromide nitrogen monoxide 7 If 20g of carbon dioxide was formed from its elements, the enthalpy change would be Type your answer... D _kJ. (Enter your answer using the following format: a.b x10^c) Example: -1.4x10^3 would be entered -1.43 De
Transcribed Image Text:1 2 3 4 5 The enthalpy of combustion for 3 moles of ethane at SATP conditions is negative. Type your answer..... 6 Which one of the following would cause 100mL of water to cool by 5.0°C in an isolated system? The decomposition of 0.19mol of N₂O4(8) The formation of 0.19mol of N₂O4(g) C The AH for the reaction 6C4A + 2 B2 would be: +150 kJ - 150 kJ +300 kJ - 300 kJ C 10000 The decomposition of 9.2mol of ethyne gas The formation of 9.2mol of ethyne gas A system that is 35% efficient uses coal as a fuel. Under the conditions of the system, the enthalpy of combustion is -76kJ/g of coal. What mass of coal would be needed to heat 400mL of water by 85.0°C? 1.9 g 5.4 g 1.9 kg 5.4 kg C Please use the following thermochemical equation for the next question. 2 A+ B₂ 3 C + 150 kJ A system uses ethanol as a fuel. What is the efficiency of the system if it requires 40.0g of ethanol to heat a 150.0g block of iron by 150°C? 0.943% 3.13% O 3.19% O 8.53% Which one of the following compounds is the most thermally stable? ethyne _kJ. dinitrogen tetroxide hydrogen bromide nitrogen monoxide 7 If 20g of carbon dioxide was formed from its elements, the enthalpy change would be Type your answer... D _kJ. (Enter your answer using the following format: a.b x10^c) Example: -1.4x10^3 would be entered -1.43 De
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