A 11.2571 g Flask B 11.3921 g Filled flasks to mark with unknown liquid 1. Weighed on analytical balance. Emptied and dried flasks A and B. Weighed empty flasks. Filled to mark with unknown liquid 2. Weighed on analytical balance.
Methanol is colorless, slightly less viscous than water, and has a slightly sweet odor.
The water sample looked and smelled like water. Limitations on the precision of the determination were the ability of the experimenter to correctly fill the volumetric flask, the accuracy of the flask itself, and the accuracy of the balance. Since both of these values are less than the discrepancy between the experimental and literature density values in this experiment, they were not the limiting factors in the precision of the results. Possible error by the experimenter that would account for the experimental precision being less than expected are not filling the flask to the mark properly or having droplets of liquid in the neck of the flask or on the outside of the flask. Handling the flask with bare hands could have introduced an error in the mass by adding fingerprints.