A 70.4-L sample of a gaseous hydrocarbon, measured at 1.00 atm pressure and 25.0°C, is burned inexcess oxygen, liberating 4.06 × 10° kJ of heat at constant pressure. What is the identity of thehydrocarbon? (R = 0.0821 L. atm/(K. mol));SubstanceAH°t (kJ/mol)CO2(g)-393.5H2O(1)-285.8O a. propylene (C3H6, AH°f = 20.41 kJ/mol)O b. acetylene (C2H2, AH°f = 226.73 kJ/mol)O c. ethylene (C2H4, AH°f = 52.47 kJ/mol)O d. propane (C3H8, AH°f = -104.7 kJ/mol)e. ethane (C2H6, AH°f = -84.68 kJ/mol)

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A 70.4-L sample of a gaseous hydrocarbon, measured at 1.00 atm pressure and 25.0°C, is burned in excess oxygen, liberating 4.06 x 103 kJ of heat at constant pressure. What is the identity of the hydrocarbon? (R = 0.0821 L. atm/(K. mol)); Substance AH°f (kJ/mol) CO2(g) -393.5 H20(1) -285.8 O a. propylene (C3H6, AH°f = 20.41 kJ/mol) b. acetylene (C2H2, AH°f = 226.73 kJ/mol) O c. ethylene (C2H4, AH°f = 52.47 kJ/mol) O d. propane (C3HB, AH°f = -104.7 kJ/mol) e. ethane (C2H6, AH°f = –84.68 kJ/mol)

A 70.4-L sample of a gaseous hydrocarbon, measured at 1.00 atm pressure and 25.0°C, is burned in excess oxygen, liberating 4.06 x 103 kJ of heat at constant pressure. What is the identity of the hydrocarbon? (R = 0.0821 L. atm/(K. mol)); Substance AH°f (kJ/mol) CO2(g) -393.5 H20(1) -285.8 O a. propylene (C3H6, AH°f = 20.41 kJ/mol) b. acetylene (C2H2, AH°f = 226.73 kJ/mol) O c. ethylene (C2H4, AH°f = 52.47 kJ/mol) O d. propane (C3HB, AH°f = -104.7 kJ/mol) e. ethane (C2H6, AH°f = –84.68 kJ/mol)

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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Question

A 70.4-L sample of a gaseous hydrocarbon, measured at 1.00 atm pressure and 25.0°C, is burned in
excess oxygen, liberating 4.06 × 10° kJ of heat at constant pressure. What is the identity of the
hydrocarbon? (R = 0.0821 L. atm/(K. mol));
Substance
AH°t (kJ/mol)
CO2(g)
-393.5
H2O(1)
-285.8
O a. propylene (C3H6, AH°f = 20.41 kJ/mol)
O b. acetylene (C2H2, AH°f = 226.73 kJ/mol)
O c. ethylene (C2H4, AH°f = 52.47 kJ/mol)
O d. propane (C3H8, AH°f = -104.7 kJ/mol)
e. ethane (C2H6, AH°f = -84.68 kJ/mol)

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