HELP!!! How much heat is required to change 40 g of ice (H2O) at 225 K to vapor (steam) at 387K?

Why are the trends and exceptions to the trends in ionization energy observed?

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 of the following shapes would represent a molecule with two bonded atoms and 3 lone pairs on only one of them , trigonal planar , bent , trigonal pyramidal , linear