Is there a way to calculate the temperature of the heat death of the universe based on the total amount of energy currently in the universe. And if the total amount of energy in the universe is zero (compose dof equal and opposite parts) is it possible for the parts to cancel each other out and return to a state of non-existence? Furthermore, I have heard that when the heat death of the universe happens everything will be at the exact same temperature, that is the velocity of all particles will be the same. But do we have a clue as to what type of particles will be around? Also, if everything is at the exact same temperature would that mean the universe could all be in a super fluid state?