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Calculate the enthalpy change of the reaction 2CO(g) + 2NO(g)  2CO(g) +N(g) using thermochemical equations:

a) 2CO(g) + O(g)  2CO(g)
b) 2NO(g)  N(g) + O(g)

The enthalpy of the equation a) is -566.0 kJ and the enthalpy of the equation b) is -180.6 kJ.

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2CO(g) + 2NO(g) -----> 2CO2(g) +N2(g)

2CO(g) + O2(g) -----> 2CO2(g) -566.0 kJ
2NO(g) ----> N2(g) + O2(g) ...

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