Ammonia burns in oxygen to form nitrogen monoxide and water according to the following reaction. How much heat is released if 47.9g ammonia is completely reacted with oxygen? H rxn= -902 kJ 4NH3 (g) + 5O2(g) —->4NO (g) + 6H2O (g)

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.