Why displacemet reaction are useful

Harvey mixes two liquids. which observation of the new mixture most likely indicates a precipitate is forming?

What happens to the atomic radius when an elctron is lost

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line