An Egg Is Placed at the Bottom of a Bowl

question 47

Multiple Choice

An egg is placed at the bottom of a bowl filled with water.Salt is slowly added to the water until the egg rises and floats.From this experiment,we conclude that

• A)egg-shell calcium is repelled by sodium chloride.
• B)the density of salt water exceeds the density of the egg.
• C)buoyant force is not always exerted upward.
• D)salt sinks to the bottom.
• E)none of the above

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