Pentaborane B₅H₉(s)burns Vigorously in O₂ to Give B₂O₃(s)and H₂O(l) $\Delta$ H_rxn for the Combustion of 5

question 116

Multiple Choice

Pentaborane B₅H₉(s) burns vigorously in O₂ to give B₂O₃(s) and H₂O(l) .Calculate $\Delta$ H_rxn for the combustion of 5.00 mol of B₅H₉.
$\Delta$ H°_f[B₂O₃(s) ] = -1,273.5 kJ/mol
$\Delta$ H°_f[B₅H₉(s) ] = 73.2 kJ/mol
$\Delta$ H°_f[H₂O(l) ] = -285.8 kJ/mol

• A)- 45,400 kJ
• B)45,400 kJ
• C)- 22,700 kJ
• D)- 9,090 kJ
• E)- 8,790 kJ

---

Definitions:

Caucasian Populations

A term historically used to refer to people from a wide range of ethnic backgrounds, mainly those with European ancestry.

Gender Biases

Preconceived notions and discriminatory attitudes based on an individual's gender that unfairly advantage or disadvantage members of a particular gender.

Diagnostic Systems

Frameworks or methodologies used in the classification and identification of diseases and disorders based on standardized criteria.

Women's Behaviours

A general term that might refer to the actions or conduct typically observed in or associated with women, though it lacks specificity and context. NO.