TenzinDanaEricBryant

The mass of the cool crucible was recorded by itself. Then the mass of the cool crucible along with 3 teaspoons of the unknown hydrate was measured. The mass of the crucible with unknown Hydrate was subtracted from the mass of the cool crucible to find the mass of the hydrate. The unknown hydrate in the clay triangle was then burned by placing it slightly above the tip of the fire. It was left there for about 5 minutes and was observed very carefully. The color changed from its previous blue to green. After the observation, the crucible was taken off it's place and allowed to cool off. After a couple of minutes it was cool enough to measure it's weight. To do this the weight of the cool crucible with the anhydrate was taken and then subtracted by the cool crucible to get the mass of the anhydrate. Then the mass of water lost was calculated. To figure this out, the mass of the unknown hydrate was taken and subtracted by mass of the anhydrate. Finally the percent mass water in the hydrate was calculated. To do this, the mass of water lost was divided by mass of unknown hydrate and then multiplied by a 100%. The end result was compared to the different hydrates. The percent mass water of the unknown hydrate was closest to that of __Magnesium Sulfate Heptahydrate__.
 * Methods Used During Lab **