The formula of determining the 
value is:
where both the distance are measured from the common origin.
10 % ethyl acetate/ hexane means it has 10 % ethyl acetate and 90 % hexane which are non-polar in nature. Hence, the non-polar compound will travel farther in the TLC plate along with the eluent and the polar compound will travel less as they remain attracted to the polar adsorbent 
.
Among 3-decanone and 3-decanol, 3-decanone will have high as it is non-polar.
Among toluene and benzoic acid, toluene will have high as it is non-polar.
Among cyclooctane and cyclooctanone, cyclooctane will have high as it is non-polar.
Answer:
High temperature and low pressure
Explanation:
At high temperature and low pressure, the molecules of the liquid do not associate to a reasonable extent.
The molecules of the liquid are somewhat separated from each other as intermolecular interactions are greatly reduced. Hence the accurate, ideal molar mass of the liquid can be measured under these conditions, hence the answer above.
D. Ionic compound
Youre welcome!
Answer: Im not sure if you are doing this in your class.
Explanation:
So... for the element of MAGNESIUM, you already know that the atomic number tells you the number of electrons. That means there are 12 electrons in a magnesium atom. Looking at the picture, you can see there are two electrons in shell one, eight in shell two, and two more in shell three
