The chief component of eggshells is Calcium carbonate, which reacts with hydrochloric acid to produce Carbon dioxide, Water, calcium chloride, and heat.

The action of Hydrochloric acid on egg shell equation is:

HCl will respond with calcium carbonate transforming it into a fluid and whatever is left of the eggshell that doesn't respond with the HCl will stay strong permitting the egg and the HCl to be isolated through a channel procedure.

The remaining eggshell substance are made out of phosphorus and magnesium, and follow measures of sodium, potassium, zinc, manganese, iron, and copper. Likewise from doing extra research the normal eggshells calcium carbonate mass is 2.2 grams and the normal rate is 77%. What's more, from doing some more extra research the adjusted condition for the lab.

Hydrochloric acid + egg shell (calcium carbonate) ---> calcium chloride + water + carbon-dioxide.