Help me get this right

In pqr m< p=60 m< q= 30 and m

The activation energy for the reaction no2(g)+co2(g)⟶no(g)+co(g) is ea = 300 kj/mol and the change in enthalpy for the reaction is δh = -100 kj/mol . what is the activation energy for the reverse reaction?

•hydration •dissociation •dissolving which one goes to which