Calculate the molar enthalpy of formation of 1 mole of PbSO4(s) from its elements, given the following equations: Pb(s) + S(s) → PbS(s) + 94 kJ/mol

PbS(s) + 2O2(g) → PbSO4(s) + 824 kJ/mol

Gases are known to have more kinetic energy than liquids and solids bases on the kinetic molecular theory.

Due to the high energy of gases, their molecules are usually far apart and held together by  very weak attractive forces.

Liquids are more closely held by stronger attractive forces.

Solids are the most closely held by very strong attractive forces.

If one opens a jar containing the same matter but at these various states, it is expected that the gases will escape and diffuses to the environment.

The solids and liquids will remain in the container.

The kinetic energy of gases gives them enough energy to freely be randomized.Explanation: