Using mathematical models and computer models to understand a chemical principle is an example of

Answer;

-Theoretical chemistry

Explanation;

Theoretical chemistry involves the use of mathematics and computers to understand the principles behind observed chemical behavior and to design and predict new compounds.

-It is the examination of the structural and dynamic properties of molecules and molecular materials using the tools of quantum chemistry, equilibrium and non-equilibrium statistical mechanics and dynamics.

answer: b) the us is the leading importer but not the leading exporter.

extra info:

the u.s is the largest importer but it is not the largest exporter as china sits on the top of the table when it comes to leading exporters.

but u.s is not far from first,

they rank in 2nd globally as the worlds largest exporter.

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