Draw the structural formula of trans-1,3-dimethylcyclohexane in the chair conformation. choose a chair from the templates toolbar at the bottom. make sure it’s the appropriate chair, including any heteroatoms. replace the appropriate hydrogens with the appropriate ch3 or other groups. important: never delete the hydrogen atoms or bonds in the ring or directly attached to the ring. also, do not try to move them by drag and drop. these actions will break the chair conformation structures. just replace them!

Look picture

Explanation:

The structural formula of a chemical compound is a graphic representation of the molecular structure, showing how the atoms are possibly arranged in space.

The real structure in what cyclohexane exist is called the chair conformation. This conformation is called the chair because it looks  like a reclining lounge chair (Look picture).

The draw of  trans-1,3-dimethylcyclohexane is in the chair conformation. The trans position means that one methyl group is in ecuatorial position while the other one is in axial position.

I hope it helps!