[basilisk]

Great to find a forum like this. Its been a long while since I've had any chemistry and I need someone to double check my calculations that I am doing for a work project:

I am calculating weight percent of the elements in a polymer. I have included an image of it below. I am fairly sure that the carbon rings are cyclohexane (C6H12), so please let me know if I am incorrect about this!
My results:
molecular weight = 340.487
C wt%=70.546%
H wt%=10.658%
O wt%=18.797%

Thanks to anyone who wants to double check this.

[Mitch]

They are not cyclohexane they are benzene moieties (C6H6)

[AWK]

1. Calculate the molecular formula correctly. Weight percentage should be approx: H - 4, C - 79 and O - 17 % (assuming X and Y  are the same number)

[basilisk]

Thanks Mitch, I'm not too familiar with organics  

And AWK, I am getting molecular weight = 322.354
C wt%=74.52%
H wt%=5.63%
O wt%=19.85%

Is there something I am missing? Assuming X=Y that means 20 carbon, 18 hydrogen and 4 oxygen

[AWK]

Assuming X=Y, a molecular unit is C18H10O4.
THough I put results with a few % errors, stiill they are better

[Asmodeus]

do you have any additional information?

like the amount of initiator and monomers used? If you do, do you also know if you are dealing with a step or chain reaction?  And lastly, if you have the afore mentioned info, are you assuming that the reaction went to gelation point. i.e. assume that everything reacted to form the polymer.

I know i'm being picky, but I remember having similar questions when I did chem of polymers.