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The calcium dissolves leaving an egg with a soft skin holding it together instead of a shell. This takes a few hours, but if you plan to test it, I recommend putting the egg in vinegar and placing it in the fridge overnight. When you wake up it will be completed.
an egg's shell doesn't dissolve in water because the shell is to hard to dissolve in non-acid liquids.
Yes. Even dilute acetic acid, vinegar, can dissolve eggshell. Try this experiment: put a raw egg in vinegar for three days. The shell will dissolve but the egg will still be intact in its membrane. You can remove the egg and it will be rubbery. Handle delicately - the membrane is thin and easily torn. You'll also notice that the egg has swollen - the membrane is permeable, and the vinegar will penetrate into the fluid parts of the egg, swelling it.
eat them
no
yes egg shells can disintegrate in vinegar.
Any strong acid, such as sulphuric, hydrochloric, nitric etc., will dissolve egg shell.
the egg shell will dissolve
The egg shell might be too dense to dissolve. It probrobly will dissolve eventually, but I don't really know. (Dense means how closely the atoms are compacted together)
acetic acid
Acid does because it does.
put it in vinegar