Consider the combustion of propane, C₃H₈​:
C₃H₈​(g) + 5O₂​(g) → 3CO₂​(g) + 4H₂​O(l)
Δₜ​H=−2220.0 kJ mol−1

How much heat is released, in units of kJ, when 15.5 L of O₂ at 298 K and 1.00 bar reacts with a stoichiometric amount of propane?
a. 91.0 kJ
b. 199 kJ
c. 219 kJ
d. 278 kJ
e. 785 kJ