Ozone o3 in the atmosphere can be converted to oxygen gas, Ask an Expert

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Ozone (O3) in the atmosphere can be converted to oxygen gas by reaction with nitric oxide (NO). Nitrogen dioxide is as well produced in the reaction. What is the enthalpy change when 8.50L of ozone at a pressure of 1.00atm and 25°C reacts with 12.00 L of nitric oxide at the same initial pressure as well as temperature? [H°f(NO) = 90.4 kJ/mol; H°f(NO2) = 33.85 kJ/mol; H°f(O3) = 142.2 kJ/mol]

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