Pentaborane B5H9(s) burns vigorously in O2 to give B203(s) and H2O(). Calculate AHxn for the combustlon of 5.00 mol of B5H9. AH{B2O3{s)) = --1,273.5 kJ/mol AH(B5H9(s)) = 73.2 kJimol AH{H20(0) = -285.8 kJ/mol Multiple Choice 22.700 kJ - 8,790 kJ 45,400 kJ - 9,090 kJ - 45,400 kJ

Pentaborane B5H9(s) burns vigorously in O2 to give B203(s) and H2O(). Calculate AHxn for the combustlon of 5.00 mol of B5H9. AH{B2O3{s)) = --1,273.5 kJ/mol AH(B5H9(s)) = 73.2 kJimol AH{H20(0) = -285.8 kJ/mol Multiple Choice 22.700 kJ - 8,790 kJ 45,400 kJ - 9,090 kJ - 45,400 kJ

Physical Chemistry

2nd Edition

ISBN:9781133958437

Author:Ball, David W. (david Warren), BAER, Tomas

Publisher:Ball, David W. (david Warren), BAER, Tomas

Chapter15: Introduction To Electronic Spectroscopy And Structure

Section: Chapter Questions

Problem 15.54E

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Question

Pentaborane B5H9(s) burns vigorously in O2 to give B203(s) and H2O(). Calculate AHxn for the combustlon of 5.00 mol of B5H9.
AH{B2O3{s)) = --1,273.5 kJ/mol
AH(B5H9(s)) = 73.2 kJimol
AH{H20(0) = -285.8 kJ/mol
Multiple Choice
22.700 kJ
- 8,790 kJ
45,400 kJ
- 9,090 kJ
- 45,400 kJ

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