Question

part a
why is chemical composition important?
it provides an analysis of the amount of an element found within a compound.
it helps to understand how much profit can be gained from using certain materials.
it explains the concept of an atom.
it provides us with structural formulas.

Explanation:

Chemical composition focuses on the elements in a compound. Profit (Business - Finance) is unrelated. Atom concept (Natural Science - Chemistry - Atomic structure) is separate. Structural formulas (Natural Science - Chemistry - Molecular structure) are different from composition analysis. Chemical composition analysis gives the amount of an element in a compound.

Answer:

It provides an analysis of the amount of an element found within a compound.