What happens as a result of the kinetic energy of the particles in a liquid being comparable with the intermolecular attractions between the particles?
a the particles do not move enough to change positions, so the liquid is not compressible.
b the particles move enough that they separate from one another and take the shape of their container.
c the particles do not move enough, so they are fixed in place, and the liquid has a fixed volume.
d the particles move enough that they are not fixed in place, and the liquid can flow.

For cyclohexane compounds drawn in a chair conformation:   -axial bonds are vertical  -equatorial bonds are parallel to two bonds within the ring.  thus, as i assume the chair conformation is drawn:   -the x group is in an axial position, as are the five other vertical bonds.  -three axial bonds are on the top face of the ring  -the other three axial bonds are on the bottom face  the position of the second substituent on each ring carbon is equatorial.  gauche groups must be on an adjacent carbon such as carbon 6 and carbon 2, and also gauche groups are rotated by 60 degrees relative to each other.  drawing the newman projections for c1–c2 and c1–c6 aids in visualizing the groups that are gauche to the y group on c1.  click this link and watch some academic videos that may you more understand the topic 

Adozen is 1221/12 = 1.751.75 x 12 = 21therefore, 1.75 is the answer.