Which of the following steps should be used when applying hess law?

There are actually 5 skills in applying Hess’ Law. According to science.uwaterloo and chem.libretexts.org these are the 5 skills.

- changing the enthalpy of the reaction whenever the equation changes

- interpreting the Hess’ Law

- applying the principle of conservation of energy to solve the problem

- sketching an energy diagram for any related reactions

- and lastly using the diagram to explain the Hess’ Law.

d.) the average kinetic energy of the gas particles is greater in container b because its particles move faster.

if you're asking what comes out, it's steam.