Afterwards, the flask was filled with distilled water to the mark, so that the bottom of the meniscus is aligned with the ring in the neck of the flask. The filled flask was then weighted and the measure was recorded. Then, the distilled water was poured from the flask into a 50 ml beaker and its temperature was recorded. Once that was done, the flask was cleaned with an unknown solution provided by the instructor and then the flask was filled with the same unknown solution up to the mark. The flask was weighted and its mass recorded. The solution was poured into the waste bin under the hood and the flask was cleaned with distilled …show more content…
These results do not make sense, which indicates that there was a personal careless error. Some personal careless errors might include not being able to completely dry the flask. These results refute the hypothesis since the density obtained in the lab and the accepted density did not