Chem 30
A space shuttle uses rocket fuels. The 2 solid rocket boosters use a fuel mixture of aluminum and ammonium perchlorate that reacts:
3Al(s) + 3NH4ClO4(s) -- Al2O3(s) + AlCl3(s) +3NO(g) + 6H2O(g)
(relevant heats formation:
Hf(NH4ClO4) =-295.3kJ/mol
Hf(AlCl3) = -705.6kJ/mol)

In the three main shuttle engines, a mixture of hydrogen and oxygen from a second fuel. Reaction: H2(g) + 1/2O2(g) -- H2O(g)
Compare the 2 rocket fuels as energy sources.
-the calculated energy released for each fuel (hess' law)
-Analysis of energy-to-mass ratio for each fuel
-Enviro concerns.

Question

Chem 30
A space shuttle uses rocket fuels. The 2 solid rocket boosters use a fuel mixture of aluminum and ammonium perchlorate that reacts:
3Al(s) + 3NH4ClO4(s) --> Al2O3(s) + AlCl3(s) +3NO(g) + 6H2O(g)
(relevant heats formation: 
Hf(NH4ClO4) =-295.3kJ/mol
Hf(AlCl3) = -705.6kJ/mol)

In the three main shuttle engines, a mixture of hydrogen and oxygen from a second fuel. Reaction: H2(g) + 1/2O2(g) --> H2O(g)
Compare the 2 rocket fuels as energy sources.
-the calculated energy released for each fuel (hess' law)
-Analysis of energy-to-mass ratio for each fuel
-Enviro concerns.