Question

Calcium carbonate is a compound that is used to make chalk for drawing on rocks or pavement. One molecule has one atom of calcium (Ca), one atom of carbon (C), and three atoms of oxygen (O). Which is the correct way to write the chemical formula for calcium carbonate?

Answer 1

carbon is correct answer

Answer 2

Explanation:

• Calcium carbonate is a chemical that is mainly naturally occurring as sand stones or chalk stones.
• It is very simple compound consisting of calcium and carbonate radical which is carbon and oxygen. It is formed when calcium hydroxide reacts with carbonic acid.  
• Calcium carbonate is formed of calcium cation and carbonate anion.  
• Calcium is represented as Ca and carbonate anion is represented as CO3.  
• So, the calcium carbonate is CaCO3