Balance the following equation:___NH3 + ___O2 --> ___NO2 + ___H2O The balanced equation shows that 1.00 mole of NH3 requires ___ mole(s) of O2.

fe 55.85 g/mol and h2o 18.02 g/mol.

it would be a gas formation

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.