Please help and this is an isotopes problem

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.

Which compound contain an iron with a 3+ charge

Hey guys so i need to know what is _nh3+> nh4oh ~chemistry~