Which does not describe the relationship between the nucleus and the electron cloud of an atom?
the electron cloud takes up much more space than the nucleus.
the charges of the nucleus and electron cloud are balanced.
the electrons move much faster than the particles in the nucleus.
the masses of the nucleus and electron cloud are balanced

The last statement is false. The masses of the nucleus constitute almost all the mass of an atom. The mass of the electons is so smaill that it is neglected in most calculus.

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 

Idon't know hope someone you