A12.0 l gas cylinder is filled with 8.00 moles of gas. the tank is stored at 35°c. what is the pressure in the tank?

Hi Again!
this question is another one for the PV=nRT formula
P is pressure, V is volume, n is moles, R is 8.314 and T is temperature
first this is turn your temperature in Kelvin, by adding 273 and you should get 308
Now you can plug into the formula
if you're solving for P, that means you are doing nRT divided by V
so you would sub in 8 for "n", 8.314 for "R", 308 for "T" and 12.0 for "V"
 you would now end up getting P= 8.00×8.314×308 and then all of that divided by 12 L
 and you should get 1707.141333 but with significant digits is turns into 1.70 ×10^1
and since you're finding pressure, your units are KpA

The correct answer would be 1. precipitation

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