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Pentaborane, B5H9, was once studied as a potential rocket fuel. Calculate the heat given off  when 1 mole of pentaborane reacts with excess oxygen according to the following equation. 2B5H9 (g) + 12O2 (g) → 5B2O3 (s) + 9H2O (g) x ΔHf B5H9(g) = 73.2 kJ/mol x ΔHf B2O3(s) = -1272.8 kJ/mol x ΔHf H2O(g) = -241.83 kJ/mol

Pentaborane, B5H9, was once studied as a potential rocket fuel. Calculate the heat given off  when 1 mole of pentaborane reacts with excess oxygen according to the following equation. 2B5H9 (g) + 12O2 (g) → 5B2O3 (s) + 9H2O (g) x ΔHf B5H9(g) = 73.2 kJ/mol x ΔHf B2O3(s) = -1272.8 kJ/mol x ΔHf H2O(g) = -241.83 kJ/mol

Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter8: Thermochemistry
Section: Chapter Questions
Problem 65QAP: Natural gas companies in the United States use the therm as a unit of energy. One therm is 1105 BTU....
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 Pentaborane, B5H9, was once studied as a potential rocket fuel. Calculate the heat given off 
when 1 mole of pentaborane reacts with excess oxygen according to the following equation.
2B5H9 (g) + 12O2 (g) → 5B2O3 (s) + 9H2O (g)
x ΔHf B5H9(g) = 73.2 kJ/mol
x ΔHf B2O3(s) = -1272.8 kJ/mol
x ΔHf H2O(g) = -241.83 kJ/mol

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