What information can you determine about Limestone from its chemical formula - CaCO3?

Limestone rocks fall under the category of sedimentary rocks that are made from mineral calcite. This rock is used to make concrete and is an excellent building stone for humid regions. Limestone, chemical formula CaCO3, is a white, chalky solid in most conditions. As a sedimentary rock, it will usually contain fossils of ancient creatures.

bai :>

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.