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The enthalpies of formation of N2O and N...

The enthalpies of formation of `N_2O` and NO at 298 K are 82 and 90 kJ `mol^(-1)`. The enthalpy of the reaction : `2N_2O_((g)) + 1/2 O_(2(g))rarr 4NO_((g))` is

A

`-8kJ`

B

`+98kJ`

C

`-74kJ`

D

`+196kJ`

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