Aqueous solutions of barium chloride and potassium carbonate combine to produce a precipitate. what are the spectator ions?

Scientific evidence tells us that the cause of earths four season is the tilt of earth as it revolves around the sun. the student is instructed to illustrate this information in a science notebook. how will the student illiterate winter in the northern hemisphere?

When a scientific theory has been tested and proved by the scientific community, it becomes a law

‘which reaction would most likely require the use of an inert electrode?