An industrial furnace must absorb exactly 750 kJ of energy by decomposing ammonium nitrate, a process whose molar enthalpy change is ΔHrxn=+25.4kJmol−1. Which expression correctly relates the number of moles n of ammonium nitrate required to the heat q that must be absorbed?
a) n=−ΔHrxnq
b) n=ΔHrxnq
c) n=ΔHrxn2q
d) n=1000ΔHrxnq