A. a spectrophotometer is known to have 0.800% stray light reach the detector for all analyses due to poor light sealing. determine the true absorbance, apparent absorbance, and apparent transmittance for a sample with a true transmittance of 0.0811.
b. what amount of stray light produces an apparent absorbance of 1.995 with a true transmittance of 0.0100?
c. in the process of performing an analysis, you determine that you need to improve the precision by limiting the error in the absorbance to 0.7200. you attempt to achieve this by reducing the amount of stray light that reaches the detector. what is the maximum amount of stray light that can reach the detector that will limit the error in the absorbance to 0.7200 for a true absorbance of 1.1?

Icant see the pictures 

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