Given the data:. N2 (g) + O2 (g) → 2 NO (g) ΔH° = +180.7 kJ 2 NO (g) + O2 (g) → 2 NO2 (g) ΔH° = -113.1 kJ 2 N2O (g) → 2 N2 (g) + O2 (g) ΔH° = - 163.2 kJ
using Hess’s Law the ∆H for the reaction below is kJ:.
N2O (g) + NO2 (g) → 3 NO (g)

In order for a high temperature boiler or steam engine to produce superheated water, or steam: the heat source must be greater than 100°c the water must be permitted to evaporate quickly the system must be sealed and become pressurized above atmospheric pressure the vapor pressure must be kept below 760 mm(hg)