What element has 31 protons and 37 neutrons?

In this chemical reaction, 325 grams of barium (ba) react completely. how many moles of lithium (li) are produced?

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.

What are transitions between a liquid and gas called? identify which way they are transitioning