Yes, after the Law of definite proportions; but now it is clear that this law is not applicable to all known chemical compounds.
Atom
yes it can
This is a solid.
You think probable to a chemical compound. But today the theory of the fixed composition is not generally valid.
The eubacteria and that chemical composition is called peptidoglycan.
Minerals have a definite chemical composition, are solid, are inorganic, are naturally occurring, and have a crystalline structure.
Definite chemical composition is when a mineral is made of the same material throughout. Basically when a mineral is only made of one material all the way through, not part iron in one part and then gold in the rest.
Atom
Yes
yes it can
A definite chemical composition
Colon is an organ not a compound with definite composition.
Yes
This law hasn't a chemical equation !
A definite chemical composition
it means a naturally-occaring, inorganic solid that has a crystal structure and a definite chemical composition
Fluorite is calcium difluoride - CaF2.