What eats a FawnsFoot Mussel?

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

Astudent carefully transfers 30 g of water and 30 g of alcohol in a glass tube, forming two layers and filling the tube completely. after sealing the tube, the student mixes the solutions, and notices a bubble that forms in the tube. what is the mass of the contents in the glass tube after mixing?

How do you know when a chemical reaction has occurred