[JRIC]

I am doing a science fair project on the absorption of various calcium supplements using egg shells. I am trying to create my hypothesis. The attached diagram illustrates the general setup. I am confused about what will happen. Any guesses? Thank you for any help that you may offer.

[Vidya]

egg shell is also made up of CaCO3 and it is insoluble in water.Hence nothing will happen I guess so....