How do forces between particles in gases compare to forces in other states of matter?

Building glycogen from glucose molecules is an example of

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?

One similarity and one difference between an element and a mixture of elements