How much nitrogen is needed to form 1.4 mol of ammonia (NH3)

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.

Compare and contrast physical changes with chemical changes.

Asubstance is a good conductor of electricity which of the following best explains a probable position of the substance in a periodic table