You need to calculate the enthalpy change (AH) of the reaction A + B → C. How can the enthalpies given for the reaction steps below be combined to
give the overall change in enthalpy?
A+B →D
C+ B>D
ΔΗ,
ΔΗ,
Ο Α. ΔΗ = ΔΗ, + 2ΔΗ,
B. AH = AH - AH2
O C. AHN AH,+AH2
O D. AH = AH2-AH,

Ammonium perchlorate nh4clo4 is the solid rocket fuel used by the u.s. space shuttle. it reacts with itself to produce nitrogen gas n2 , chlorine gas cl2 , oxygen gas o2 , water h2o , and a great deal of energy. what mass of nitrogen gas is produced by the reaction of 2.1g of ammonium perchlorate?