Use Hess’s Law to calculate the heat of reaction, ∆HRXN, for the following chemical process: NO(g) + O(g) → NO2(g)

using the information given below:
NO(g) + O3(g) --> NO2(g) + O2(g) DeltaH = -198.9 kJ / mol
O3(g) --> O2(g) DeltaH = -142.3 kJ / mol
O2(g) --> 2 O(g) DeltaH = +495 kJ / mol

High-pressure liquid chromatography (hplc) is a method used in chemistry and biochemistry to purify chemical substances. the pressures used in this procedure range from around 500 kilopascals (500,000 pa) to about 60,000 kpa (60,000,000 pa). it is often convenient to know the pressure in torr. if an hplc procedure is running at a pressure of 1.03×108 pa , what is its running pressure in torr?