8. Another student performs this lab, following a similar procedure to the one you used. However, the student stops adding ice when their water cools down to only
15°C, instead of adding more ice until the water reaches a temperature close to
0°C. Will this version of the procedure change the final calculated value of delta Hfos?
Justify your response by indicating what measurements would have changed.

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 

The teacher is mostly talking about the distillation of a mixture

Must be negative.substance increases