How to determine the relative rates of reactant disappearance and product appearance using reaction stoichiometry

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

Anthracite is so hard and pure it is also referred to as a renewable resource metamorphic rock hot bituminous coal dirty fuel

The chemical formula for emerald is be3al2(sio3)6.an emerald can be decided as