In an alternate universe, the smallest negative charged particle, analogous to our electron, is called a blorvek. to determine the charge on a single blorvek, an experiment like millikan's with a charge oil droplets was carried out and the following results were recorded:
droplet number charge (c)
1 7.74 *10^-16
2 4.42 * 10^-16
3 2.21 * 10 ^-16
4 4.98 * 10 ^-16
5 6.64 * 10^-16
a) based on these observations, what is the largest possible value for the charge on a blorvek?

b) further experiment found a droplet with a charge of 5.81 * 10^-16 c does this new result charge our part answer to part (a)? if so, what is the new largest value for the blorvek's charge?

The charge of a blorvek has to be a number that divides exactly all the charges found, and the largest possible charge on a blorvek is the largest number that divides the five charges found for the drops. When you divide 4.42, and 2.21 you get whole numbers (2 and 1). But 2.21 does not divide exactly 7.74 and 4.98. You can find that 0.5525 is the largest number that divides the five numbers: 7.74 / 0.5525 = 14, 4.42 / 0.5525 = 8, 2.21 / 0.5525 = 4, 4.98 / 0.5525 = 12. So, the answer is 0.5525 * 10 ^ -16 C or 5.525 * 10^ -17 C. For the part b) you find that 5.81 / 0.5525 = 10.5, so this charge means that the charge value in the first part is not valid anymore. If you divide 0.5525 by 2 you will find the new largest value: 0.5525 / 2 = 0.27625. You can check that 5.81 / 0.27625 = 21. And the new largest value is 2.7625 * 10^ - 17 C.

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