Is this reaction endothermic or exothermic
d) nh4no3 (s)  nh4+ (aq) + no3− (aq) [note, this is the reaction that takes place in a cold pack]

electron microscopy and scanning tunneling microscopes gives us a greater understanding of atoms by being able to see the atom itself, and lets us see some atomic reactions.

explanation:

answer; 4 electrons;