Agas is contained in a 5.0–liter container at a pressure of 100 kpa. what size container would be required to contain the gas at a pressure of 50 kpa, assuming the temperature remains constant?

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?