In the laboratory a student was determining the formula for the hydrate of barium chloride, BaCl2. The student cleaned, dried and determined the mass of the crucible and cover. The student then added a sample of the hydrate to the crucible and determined the mass. The student heated the sample in the crucible strongly for 10 minutes. The sample in the crucible and cover was cooled and the mass was determined. The mass data is provided in the table below:
Mass of crucible and cover | 31.623 grams |
Mass of crucible, cover, and sample prior to heating | 33.632 grams |
Mass of crucible, cover, and sample after heating | 33.376 grams |