how would i the sturctural formula look for this one:

dimethyl-propane:
my guess that it would be like so:
CH3
l
CH2
l
C-CH2-CH3
l
CH2
l
CH3

Is this right?

Please visit the following:

http://images.google.com/images?hl=en&safe=off&as_qdr=all&sa=N&resnum=0&q=%20%22dimethylpropane%22&spell=1&tab=wi

You have written 1,1-diethyl propane. I hope this helps.

Based on your description and the drawn structure, it appears that you may have misinterpreted the name "dimethyl-propane." Dimethyl-propane would refer to a propane molecule with two methyl (CH3) groups branching off from the main chain.

To correctly visualize the structural formula of dimethyl-propane, consider the following representation:

CH3
|
CH3 - C - CH2 - CH3
|
CH3

In this structure, the central carbon (C) is attached to three other carbons, forming the propane backbone. Two methyl groups (CH3) are attached to the central carbon.

To ensure accuracy, it is always a good idea to cross-reference the structural formula with reliable sources such as chemical databases or textbooks.