Which of the following statements is not accurate of blood alcohol content (bac)?
a.
bac is used to determine number of beverages consumed.
b.
bac varies from one individual to the next.
c.
bac is used to determine level of intoxication.
d.
bac is the concentration of alcohol in a person's blood.

For the answer to the question above, the answer is A. BAC is used to determine the number of beverages consumed.

BAC is used to measure the level of intoxication of an individual. It is often expressed as the weight of ethanol in a given volume of blood. It must be noted that different people have different BACs due to several factors such as weight, alcohol consumption, gender, and food intake. Though BAC is used to measure the amount of alcohol in the blood, it does not determine the number of beverages consumed. I hope this helps.

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