Question

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Answer 1

Answer:

calcium nitrate,co2,h2o

Explanation:

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Answer 2

Answer:

Observation: A brisk effervescence is seen and a gas which turns lime water milky and extinguishes a glowing splinter is evolved.

Nitric Acid reacts with egg shell to form calcium nitrate, carbon dioxide and water.

Equ:

CaCO3 [s] + 2HNO3 [aqu] --------> Ca(NO3)2 [aqu] +CO2 [g] + H2O [l]

 Egg shell   + Nitric Acid      --------> Calcium Nitrate + Carbon dioxide + Water