Nitrogen oxide, NO, has been found to be a key component in many biological processes. It also can react with oxygen to give the brown gas nitrogen dioxide, NO2, which is used to produce rocket fuels...

• Nitrogen oxide, NO, has been found to be a key component in many biological processes. It also can react with oxygen to give the brown gas nitrogen dioxide, NO₂, which is used to produce rocket fuels and explosives. When one mole of NO reacts with oxygen, 57.0 kJ of heat is evolved.

What is the enthalpy of reaction when 5.00 g of nitrogen oxide reacts with excess O₂ to produce NO₂?

Extracted text: 2NO2(g) AH = – 57.0 kJ 2NO(g) + 02(g)