It has to do with osmosis since their is so much salt in saltwater the salt takes up space so their is more water in the egg so the egg will shrink and their will be more water in the cup so it reaches eqilibrium.
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The circumference of an egg in vinegar varies for each egg.
The egg should have its water or substance in the egg come out through the cell membrane. :)
the outside of the egg will be hard because the egg will be boiling
An egg is a cell, and so water would move from the container of water to inside the egg by a process called osmosis. This is because osmosis involves the movement of water from a high water potential to low water potential until equilibrium is achieved.
The circumference of an egg placed in salt water will continue to grow for as it is in the water. The ending circumference may even end up to be 50 percent more than what it started out.