How can you remove the hard calcium carbonate layer of the egg without damaging its semipermeable numbrane? Can this egg be inserted into a bottel with a narrow neck without distorting its shape? Explain the process involved.

Explanation

The hard layer of egg white in colour, consists of calcium. It can be remooved by placing the egg in dilute hydrochloric acid for sometime. It dissolves calcium carbnonate, leaving behind the egg without damaging its soft sempermeable membreane. The size of the egg can be reduced or it shrinks by placing in saline water (contains NaCI) for sometime. The fluid from the egg with reduced size can be inserted in a bottle with narrow neck. If the bottle contains water, the egg will regain its original shpe and size due to esmosis of water (hypotnic) through the sempermeable membrne. For more details, consults section 12.