Why does a baseball have more mass than a ping pong ball?

How do the energy differences between the higher energy levels of an atom compare with the energy difference between the lower energy level of the atom

Arollercoaster car at the top of a hill has potential energy kinetic energy chemical energy light energy

Asa choose the correct set of reaction coefficients to properly balance the following chemical equation according to the law of conservation of mass: __s8 + __o2 ==> __so2 1, 1, 8 1, 8, 1 1, 8, 8 8, 1, 1