Question

Fill in the blanks: The chemical formula of limestone is ___________.

Answer 1

Hint: To fill in the solution we need to have knowledge about the chemistry of limestone. Limestone is made out of a sedimentary rock of carbonate. And it consists of the particles of a skeletal of any marine organisms such as foraminifera, coral, and mollusks.

Complete step by step answer:
Limestone is a sedimentary rock, which was originally formed by the accumulation of sediments on a sea floor and some of them was formed in freshwater. Afterwards, these sediments turned out to be limestone rock which was composed of over 50 percent carbonate minerals.
There are three main components present in limestone:
calcite and aragonite
dolomite
And some other impurities
Now, let’s see how limestone is formed. Coquina is the initial name related to limestone that was in the form of poorly cemented shells and their fragments. The stalagmites and stalactites present in the caves are mostly composed of limestone.
There are a few ways with the help of which we can classify the limestone. So let’s refer to those points to derive the chemical formula:
the way in which it is formed
the different types of grains used
the amount and type of fossils indulged
and the chemical composition
The main intention of the limestone landscapes is to discover the way in which particular limestone gives rise to a distinctive landscape and then go into the details of classification and the general shape and textures.
Thus, the chemical formula of limestone is $CaC{O_3}.$

Note:
Limestone exists in both crystalline and sedimentary form. It originates as soft lime mud, shells and skeletal fragments of the living organisms in water. When these sediments are buried under others, they are compacted and then the water is squeezed out of the pore spaces.