Which statement is true about this equation?
although it is unbalanced, it can be balanced by using the half-reaction method.
it has been balanced by using the half-reaction method.
it has been balanced by directly using spectator ions.
although it is unbalanced, it can be balanced by directly using spectator ions.

Movement that is like a t a type of wave that transfers energy where the particles in the medium move in a circle motion while the energy travels left or right. a type of wave that transfers energy where the particles in the medium move perpendicular to the direction in which the energy is traveling. transfers energy from one location to another a type of wave that transfers energy where the particles in the medium move parallel to the direction in which the energy is traveling. movement that is back and forth, like an equal sign = 1. wave 2. parallel movement 3. perpendicular movement 4. transverse wave 5. longitudinal wave 6. surface wave