posted by mark .
Is this correct?
A 0.1471 g sample of a compound containing C, H, and F was burned to produce 0.1960 g CO2 and 0.08024 g H2O. If the molar mass of the compound was determined to be approximately 66.05 g/mol, what is its molecular formula?
My answer is: C_12 H O_20
You probably made the same mistake I did the first time through this problem; that's F and not O.
I obtained CH2F for the empirical formula and C2H4F2 for the molecular formula.