Asked by Jenny
                How much heat is absorbed/released when 20.00 g of NH2 reacts in the presence of excess O2 to produce NO and H2O according to the following chemical equation: 
4NH3 + 5O2 --> 4NO + 6H2O, deltaH= +1168 kJ.
The answer is 342.9 kJ of heat absorbed. I want to know how to complete this problem.
            
        4NH3 + 5O2 --> 4NO + 6H2O, deltaH= +1168 kJ.
The answer is 342.9 kJ of heat absorbed. I want to know how to complete this problem.
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