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: Calculate the heat of formation of benzene 15 C,H,(1) +02(9) → 6C0,(g) + 3H,0(1) 2 from the following data A Hº (CO2) = -393.5 kJ A H? (H20) = -285.8 kJ A H° = -3303 kJ

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

: Calculate the heat of formation of benzene
15
C,H,(1) +02(9) → 6C0,(g) + 3H,0(1)
2
from the following data
A Hº (CO2) = -393.5 kJ
A H? (H20) = -285.8 kJ
A H° = -3303 kJ

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( is the answer is + 46.48 or -46.48 plzz telll ...why + or why - also explain
04) (g Calculate the volume of air at 30°C and 1.00 atm that is needed to burn completely 10.0 grams of propane. Assume that air is 21.0 percent O₂ by volume. The heat of combustion of propane is -2,220.1 kJ/molrxn. Calculate the heat of formati of propane given that AHO of H₂0(1) = -285.3 kJ/mol and AHO of CO2(g) = -393.5 kJ/ f AH-[(3•Co₂) + (4•H₂0)]-[C3H8 + 5(0₂)] [ F)+(4(-285.3)]-[AH C3H5] [200
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10. The following molar enthalpies of formation are given in kJ/mol: AHP[C;Hs(g)] = -104; AHP[CO2(g)] = -394; AHP[H;O(g)] = -242. (a) Calculate the molar heat of combustion of propane (C;Hs) according to the following equation: C;Hs(g) + 5 O2(g) → 3CO2(g) + 4H2O(g); (b) How many grams of propane gas must be combusted to provide enough thermal energy to heat 1.00 kg water from 22.0°C to 100.0°C? (Specific heat of water = 4.184 J/mol.K)
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