A 0.7381 g sample of a compound containing C, H, and F was burned to produce 0.6368 g CO2 and 0.1303 g H2O. Calculate the empirical formula of the compound.

Do I have to take in account the O atoms?

There are no O atoms in the compound. Just C, H, and F. Convert CO2 to g C, H2O to g H, and subtract the sum of C and H from 0.7381 to find g F.