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Substance AH; (kJ/mol) Calculate the enthalpy change, AH°, for the "expansion" of methane: C(g) 718.4 CH4 (g) C(g) + 4H(g) CF4(g) Express your answer to one decimal place and include the appropriate units. -679.9 CH4(g) -74.8 > View Available Hint(s) H(g) 217.94 HF(g) -268.61 HA Keep in mind that the enthalpy of formation of an element in its standard state is zero. Value AH = Units

Substance AH; (kJ/mol) Calculate the enthalpy change, AH°, for the "expansion" of methane: C(g) 718.4 CH4 (g) C(g) + 4H(g) CF4(g) Express your answer to one decimal place and include the appropriate units. -679.9 CH4(g) -74.8 > View Available Hint(s) H(g) 217.94 HF(g) -268.61 HA Keep in mind that the enthalpy of formation of an element in its standard state is zero. Value AH = Units

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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+ Enthalpy of Reaction: State and Stoichiometry 37 of 42 Constants Periodic Table Use the data below to answer the questions. Part B Substance AH (kJ/mol) Calculate the enthalpy change, AH®, for the "expansion" of methane: C(g) 718.4 CH4 (g) C(g) + 4H(g) CF4(g) Express your answer to one decimal place and include the appropriate units. -679.9 CH (g) > View Available Hint(s) -74.8 H(g) 217.94 HF(g) -268.61 Keep in mind that the enthalpy of formation of an element in its standard state is zero. Value Units AH = Submit Previous Answers
Transcribed Image Text:+ Enthalpy of Reaction: State and Stoichiometry 37 of 42 Constants Periodic Table Use the data below to answer the questions. Part B Substance AH (kJ/mol) Calculate the enthalpy change, AH®, for the "expansion" of methane: C(g) 718.4 CH4 (g) C(g) + 4H(g) CF4(g) Express your answer to one decimal place and include the appropriate units. -679.9 CH (g) > View Available Hint(s) -74.8 H(g) 217.94 HF(g) -268.61 Keep in mind that the enthalpy of formation of an element in its standard state is zero. Value Units AH = Submit Previous Answers
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