HELP PLS!! I REALLY NEED HELP, WILL GIVE BRAINLIEST. FIND THE ELECTRON DOT AND STRUCTURAL AND EXPLAIN RQ

When will le chatelier's principle come into effect? at the beginning of a reaction, when there are only reactants when a reaction has reached chemical equilibrium when a catalyst is added to a reaction mixture when a reaction is occurring but not yet at equilibrium

At room temperature what happens to the average kinetic energy of the molecules of a solid, liquid, and a gas

Idon’t know how to solve this question