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needingtoknow
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Homework Statement
NH3 + O2 --> NO + H2OEnthalpies of formation
NO: 91.3 kJ
H2O: -241.8 kJ
NH3: -45.9 kJ
Homework Equations
delta h = sum*moles enthalpy of formation of products - sum*moles enthalpy of formation of reactants
The Attempt at a Solution
= [(1)(91.3) + (1)(-241.8)]-[(1)(-45.9)]
= -104.kJ The answer in the back says -902 kJ. What am I missing?