Heat content of a system is equal to the enthalpy only for a system that is

If two objects at different te,peraure are in contact with each other what happens to their temperature

Astable electron arrangement for an atom is one that does not easily change. how is this arrangement arrived at? a. valence electrons are transferred or shared to create a full outer shell of electrons. b. valence electrons are discarded into space to create a full outer shell of electrons. c. protons (positive charge) pair with valence electrons (negative charge) to create a strong bond. d. outer shells with valence electrons are transferred or shared.

Which rate indicates the number of children that would be born per woman if she were to live to the end of her child bearing years