B₅H₉(l) is a colorless liquid that will explode when exposed to oxygen. How much heat is released when 0.211 mol of B₅H₉ reacts with excess oxygen where the products are B₂O₃(s) and H₂O(l). The standard enthalpy of formation of B₅H₉(l) is 73.2 kJ/mol, the standard enthalpy of formation of B₂O₃(s) is -1272 kJ/mol and that of H₂O(l) is -285.4 kJ/mol. Express your answer in kJ.
