How are ice water and water vapor alike

Ineed this asap part i: scientific method what is the difference between science and pseudoscience? what is the scientific method?

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?

Which proportionality applies to avogadro’s law?