The energy diagram shown represents the chemical reaction between solid ammonium chloride and solid barium hydroxide octahydrate:
2nh4cl(s)+ba(oh)2⋅8h2o(s)→2nh3(aq)+ bacl2(aq)+10h2o(l)
the δh for this reaction is 54.8 kj . how much energy would be absorbed if 24.3 g of nh4cl reacts?

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.