Multiple Choice
Pentaborane B5H9(s) burns vigorously in O2 to give B2O3(s) and H2O(l) . What is ΔH° for the combustion of 1 mol of B5H9(s) ? Substance ΔH°f (kJ/mol)
B2O3(s) -1273.5
B5H9(s) +73.2
H2O(l) -285.8
A) -1486.1 kJ
B) -1632.5 kJ
C) -4396.7 kJ
D) -4652.85 kJ
E) -9086.1 kJ
Correct Answer:

Verified
Correct Answer:
Verified
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