Which statement describes the magnetic field within a bar magnet? it points from north to south. it points from south to north. it forms loops inside the magnet. there is no field within the magnet.

Can someone me with questions 15 to 17 plz.

How is energy related to the change of state represented by the model? atoms gain energy as a solid changes to a liquid. atoms gain energy as a solid changes to a gas. atoms lose energy as a solid changes to a liquid. atoms lose energy as a solid changes to a gas.

What are the coefficients that will balance the skeleton equation below? n2 + h2 → nh3